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β€œcertifi”
status.bunny.netadvisoryπŸ›‘οΈ Security

Bunny CDN Security Incident

Bunny CDN status-page notice, posted 28 October 2026, about unauthorized access at an infrastructure provider that hosted one bunny.net CDN node in Armenia. Traffic was stopped within 20 minutes and the server wiped. No access to the node was found, but cached content, Pull Zone configs and TLS certificates could have been exposed, so all platform certificates were reissued. Customers with their own certificates should rotate them with new private keys.

Bunny CDNTLS
bunny.netb-cdn.netbunny.run

Threat Intel, Cloud & InfraΒ· Added 31 Oct 2026, published 30 Oct 2026

blog.cloudflare.comwriteupπŸ›‘οΈ Security

4 real? Tracking exploitation and patching of eMudhra’s weak keys

Cloudflare's follow-up on eMudhra's eight trivially recoverable intermediate CA keys (such as 4, 56 and 66), disclosed 19 October 2026. Pingora logging showed about 22,000 handshakes with the weak keys, including about 160 forged certificates made within hours of disclosure. Probes on 50 million challenge pages show many bots, old browsers and Android WebView still trust the chain.

CloudflarePingoraAndroid WebView+2
eMudhraMozillaDennis Jackson+6

Threat Intel, Blue Team & DetectionΒ· Published and added 30 Oct 2026

microsoft.comwriteupπŸ›‘οΈ Security

From help desk impersonation to AD CS abuse: Investigating ESC1 and ESC8 intrusion paths

Microsoft Threat Intelligence analysis of two human-operated intrusions that began with Teams help desk impersonation and Quick Assist sessions, then diverged at AD CS. Case 1 abused an ESC1 template for privileged certificates and DCSync, with an excluded account later used for Rclone exfiltration. Case 2 used PetitPotam and ESC8 relay to get a domain controller certificate and PKINIT. Includes investigation steps, AD CS hardening and KQL hunting queries.

Active Directory Certificate ServicesMicrosoft TeamsQuick Assist+3
ESC1ESC8PetitPotam+12

Blue Team & Detection, Threat Intel, Offensive SecurityΒ· Published and added 30 Oct 2026

github.comcourse🧠 AI

rohitg00/ai-engineering-from-scratch

ai-engineering-from-scratch is a free, MIT-licensed curriculum of 542 lessons in 20 phases, from math and deep learning through transformers, LLM engineering, MCP, agents and capstones. Code is in Python, TypeScript, Rust and Julia. It includes three graded projects (retrieval evaluation, agent trace debugger, tool call firewall), installable tutor skills for Claude Code and Codex, and certification prep tracks.

PythonTypeScriptRust+13
Rohit GhumareOpenClawHermes+6

Β· Added 29 Oct 2026

securityweek.comarticleπŸ›‘οΈ Security

How Secure Are US Elections? Voting Machine Risks andΒ the Growing Threat of AI

SecurityWeek article examining US election security through a cybersecurity lens. It covers voting machines certified by the Election Assistance Commission but unpatched for up to two years, machines hacked at DEF CON's Voting Village, and QR-code ballots voters cannot verify. Sequent's Shai Bargil proposes open-source software and encrypted vote records. It also covers AI-enabled influence campaigns such as the 2024 Biden deepfake robocall.

Microsoft ElectionGuard
Election Assistance CommissionVoting VillageDEF CON+9

Threat Intel, AI SecurityΒ· Published and added 29 Oct 2026

securityweek.comarticleπŸ›‘οΈ Security

TLS Flaws Found in GoAhead Web Server Used in Hundreds of Millions of Devices

FoxIO disclosed three TLS flaws in the GoAhead embedded web server from EmbedThis, used on hundreds of millions of IoT, OT and network devices. CVE-2026-115881 (CVSS 9.1) leaves revoked client certificates accepted under mTLS with OpenSSL; CVE-2026-115884 (7.4) bypasses chain-length limits with LibreSSL; a third Mbed TLS bug (5.9, no CVE) weakens TLS 1.2 DHE. GoAhead 6.1.1 fixes the OpenSSL and Mbed TLS issues, and FoxIO released PoC code and fingerprints.

GoAheadOpenSSLMbed TLS+2
CVE-2026-115881CVE-2026-115884FoxIO+4

Hardware & RF, AppSecΒ· Published and added 28 Oct 2026

decrypt.coarticle🧠 AI

OpenAI Proves ETH Is False, and Crypto Twitter Has Questions

Decrypt reports that OpenAI published a 67-page paper (dated 17 October 2026, revised 25 October) claiming its AI found a deterministic subexponential-time algorithm for counting 3-SAT solutions, which would refute the Exponential Time Hypothesis. The proof was formalized in Lean. Impagliazzo, Paturi and Ryan Williams are reviewing it independently and say this is not certification. Anthropic posted a Claude-credited 3-SAT paper on 26 October.

LeanGitHubClaude
OpenAIAnthropicDecrypt+7

research, modelsΒ· Published and added 27 Oct 2026

github.comcourseπŸ›‘οΈ Security

cks/tasks/cks/course/README.md at master Β· ViktorUJ/cks

The ViktorUJ/cks course is an open-source, community-maintained preparation course for the CKS (Certified Kubernetes Security Specialist) exam. It has 33 chapters grouped by CKS domain: cluster setup, hardening, system hardening, microservice vulnerabilities, supply chain, and runtime security. It also has 15 labs with automatic checks (labs 101-114), mock exams and Killer.sh guidance. Core labs target Kubernetes v1.36.

KubernetesFalcoTrivy+3
CKSCertified Kubernetes Security SpecialistCNCF Kubestronaut+3

Learning, Cloud & InfraΒ· Added 27 Oct 2026

ethresear.chthreadπŸ›‘οΈ Security

Proof of One: one-person-one-identity polling with encrypted ballots β€” design and reference code, requesting critical review

Proof of One is an open-source design for polls with one verified human per identity and unlinkable ballots. Enrolment proves in zero knowledge that an ICAO 9303 passport chip was signed by a trusted signer, plus an enclave face match. Voting uses threshold exponential ElGamal on Baby Jubjub with Groth16 proofs, and tally uses a GJKR DKG with a 7-day challenge window. The author, who is pseudonymous, discloses that AI agents drafted most of it and asks for critique of unlinkability, circuit completeness and certificate trust.

Groth16Baby JubjubDAVINCI+1
Proof of OneNemo UnusICAO 9303+4

Identity & AccessΒ· Published and added 27 Oct 2026

ethresear.charticleπŸ›‘οΈ Security

Inventory of PQ P2P Migrations in the Consensus Layer

Inventory of post-quantum migration work for Ethereum consensus-layer networking, by adust09 of Nyx Foundation. It maps three targets: Discovery v5/ENR signatures and key exchange, TLS 1.3 key agreement in QUIC, and libp2p TLS identity binding and CertificateVerify. It covers the 300-byte ENR and 1,280-byte packet limits, why hybrid KEMs do not authenticate peers, and downgrade and DoS concerns. It selects no algorithm or schedule.

Ethereumlibp2pQUIC+3
ML-KEMECDSAFIPS 203+8

otherΒ· Published and added 27 Oct 2026

eprint.iacr.orgpaperπŸ›‘οΈ Security

Poly2MsgLeaks: Certified Key Recovery from Polynomial-to-Message Leakage

Poly2MsgLeaks is a profiled chosen-ciphertext power-analysis attack on the SMAUG-T (TiMER parameter set) post-quantum KEM that recovers the full 512-coefficient PKE secret from six traces on an STM32F415. It recovers 999 of 1,000 unseen secrets and proves an incorrect key is released with probability at most 2^-2095.6. Single-write message assembly and a two-share masked P2M resisted the evaluated six-execution attack.

SMAUG-TSTM32F415
Poly2MsgLeakschosen-ciphertext attackpolynomial-to-message leakage+1

Hardware & RFΒ· Added 28 Oct 2026, published 27 Oct 2026

socket.devarticleπŸ›‘οΈ Security

eMudhra, Brotli, and the Long Tail of a Security Fix

Socket post on why fixing the eMudhra weak-key intermediate CA incident (October 2026) and Brotli memory corruption CVE-2026-111497 takes more than updating Node.js. Bundled Brotli copies in Bun, Python Requests and .NET, Go binaries needing rebuilds, and per-program certificate stores all leave stale copies. It lists steps: track bundled components, keep a rebuild path, use workarounds, and verify the shipped artifact.

Node.jsBrotliBun+6
CVE-2026-111497eMudhraOneCRL+6

Supply Chain, AppSecΒ· Published and added 26 Oct 2026

eprint.iacr.orgpaperπŸ›‘οΈ Security

Chosen Commitments and Certified Decoding Regions in the Adaptive Threshold Schnorr Attack

This IACR ePrint 2026/2632 paper by Demirtaş and Yayla analyses the Crites–Stewart adaptive forgery attack on threshold Schnorr signatures, which needs one call to a sparse linear search oracle (bounded distance decoding of a scaled Reed–Solomon code). It shows that choosing the commitment coefficient vector does not help much: a wrapper adversary with Q challenges succeeds with probability at most QM/p, even if its solvers decode every witness for free. For the six original (N, Ο„) pairs, M stays below 2^24, so the bound is under 2^-100 after 2^128 challenges at p = 2^252.

Schnorr signaturesReed–Solomon codesfolded Reed–Solomon codes
Crites and Stewart attackGuruswami–WangAshvinkumar–Habib–Srivastava+2

otherΒ· Added 26 Oct 2026, published 24 Oct 2026

arxiv.orgpaper🧠 AI

Intervention-Certified Amplification: A Validity Gate for $Οƒ$-Weighted Post-Training

Intervention-Certified Amplification (ICA) is a validity gate for sigma-weighted hybrid SFT/RL post-training. The paper shows that DIAA, a per-sample sigma-weighted hybrid, emits unexecuted tool-integrated reasoning on 29% of MATH-500 prompts (three times vanilla GRPO) even with Python fences removed from its anchor. ICA gates sigma with paired-rollout evidence, cutting TIR to 13.8% (frozen) and 11.2% (online) and raising accuracy from 47.5% to 48.7% and 49.3%. It transfers to GSM8K.

GRPOPython
DIAAIntervention-Certified AmplificationMATH-500+2

training, researchΒ· Added 27 Oct 2026, published 24 Oct 2026

eprint.iacr.orgpaperπŸ›‘οΈ Security

When Elliptic-Curve Semiprimality Certificates Reveal Factors

The paper formalizes elliptic-curve semiprimality certificates by adapting the Goldwasser-Kilian primality criterion. For certificates built with complex multiplication, a norm-lattice reconstruction factors N from (N, S, D) alone in expected polynomial time. The author uses it, plus public-point and quadratic-twist attacks, to factor Reble's 1084-digit and Broadhurst's 5061-digit moduli, and shows that hidden-cofactor, withheld-CM-map and private-isogeny repairs also fail.

Goldwasser-Kilian primality criterionReble modulusBroadhurst modulus+4

otherΒ· Added 26 Oct 2026, published 24 Oct 2026

endorlabs.comarticleπŸ›‘οΈ Security

Everything, everywhere, all at once… the week software broke | Endor Labs

Endor Labs roundup of the 20 to 21 October 2026 patch wave: eMudhra certificate authority keys that anyone can recover, PHP2Shell (CVE-2026-109618, CVE-2026-109619), Node2Shell (CVE-2026-111497) and malware in LiteLLM 1.107.0. It lists fixed versions (PHP 8.2.35 to 8.5.12, Node.js 22.23.4, 24.22.1, 26.12.1, LiteLLM back to 1.106.2) and explains why many separate trust-store copies each need updating. It closes with advice on triage, remediation and SBOM/VEX reporting.

PHPNode.jsLiteLLM+3
CVE-2026-109618CVE-2026-109619CVE-2026-111497+3

Supply Chain, AppSecΒ· Published and added 24 Oct 2026

stepsecurity.ioarticleπŸ›‘οΈ Security

eMudhra / emSign CA Compromise: What Python, pip, and CI/CD Users Need to Update

Guidance on the October 2026 eMudhra / emSign CA incident, where eight intermediate CA certificates had private keys generated with insufficient randomness. It explains why updating certifi alone does not fix pip's vendored bundle, and lists fixed versions (certifi 2026.10.19, pip 26.2.2, Python 3.15.1, 3.14.9, 3.13.17). StepSecurity's OpenSSL 4.0.3 tests showed the older bundle accepted seven emSign paths, while both corrected bundles rejected all fourteen.

pipPythoncertifi+3
eMudhraemSigncertificate authority compromise+3

Supply Chain, DevSecOpsΒ· Published and added 22 Oct 2026

eprint.iacr.orgpaperπŸ›‘οΈ Security

Balsamic: One-round Threshold UOV from GPU-Accelerated FHE

Balsamic is a complete homomorphic Unbalanced Oil and Vinegar (UOV) signer, used to build one-round threshold UOV signatures from a packed discrete-CKKS FHE circuit. A paired-pivot linear solver and pivot-success certificates allow encrypted retry selection. In 2-out-of-3 semihonest signing, each online partial signature takes 10.7 s on an RTX 6000 Ada and 7.77 s on a GB300, with 5.25 MB per response.

UOVCKKSFHE+2
Balsamicuniversal thresholdizerspaired-pivot solver+1

otherΒ· Added 24 Oct 2026, published 22 Oct 2026

unit42.paloaltonetworks.comadvisoryπŸ›‘οΈ Security

EMudhra Intermediate CA Certificates Compromised

Unit 42 advisory on the compromise of eight intermediate CA private keys belonging to Indian CA eMudhra Limited. The keys were generated with insufficient randomness, so attackers could derive them from the public certificates and sign rogue TLS certificates for MitM attacks. eMudhra has revoked the certificates and browser and OS vendors have untrusted them. Interim guidance covers PKI and trust store audits, reissuance, strict CRL/OCSP checking, log hunting, CT monitoring and CAA records.

Prisma BrowserJavaDocker+2
eMudhraUnit 42Palo Alto Networks Next-Gen Trust Security+1

Threat Intel, Blue Team & DetectionΒ· Added 30 Oct 2026, published 22 Oct 2026

blog.cloudflare.comarticleπŸ›‘οΈ Security

Localizing compliance at scale: achieving South Korea’s ISMS certification

Cloudflare's account of obtaining South Korea's ISMS-P certification after a ten-day KISA audit of 80 controls and a preparation period of about a year and a half. It explains that the certificate covers a service delivery boundary rather than a product list, that auditors required readable data flow diagrams, and how Korean sign-up uses itemized consent with social login removed.

CloudflareCloudflare Workers
ISMS-PKISAPersonal Information Protection Act+5

GRCΒ· Added 29 Oct 2026, published 22 Oct 2026

aikido.devarticleπŸ›‘οΈ Security

eMudhra CA compromise: eight private keys, and one of them is 4

eMudhra's eight intermediate CA certificates, chaining to emSign ECC Root CA - G3, had private keys below 256 (one is 4), disclosed on 17 October 2026 by a researcher known as Wayne. Browsers and Microsoft blocked them via revocation pushes, but curl, git, containers, language runtimes and IoT may still trust them. The post gives patched ca-certificates versions, test commands and the timeline.

cURLDockermacOS+3
eMudhraemSign ECC Root CA - G3Wayne+6

Supply Chain, DevSecOpsΒ· Published and added 22 Oct 2026

x.comadvisoryπŸ›‘οΈ Security

lee1981 (@lee1981b) on X

CyberForge CVE of the Day #084 analyses CVE-2026-76466, a CVSS 9.8 flaw in clustered Cisco Expressway-C and Expressway-E. Persistent database cookies and weak client-certificate validation allow root OS command execution over the network. The fix is X15.5.20 (X14 and earlier must migrate), with no workaround. It adds a per-peer SOC investigation trail, reachability checks and exposure status from CISA SSVC, KEV and EPSS.

Cisco ExpresswayCVSSNVD+2
CVE-2026-76466CWE-798cisco-sa-vcs-static-cred-hr7EWZ8t+2

Blue Team & Detection, Cloud & InfraΒ· Added 24 Oct 2026, published 22 Oct 2026

oracle.comadvisoryπŸ›‘οΈ Security

Oracle Security Alert Advisory – CVE-2026-91403 (eMudhra cert revocation)

Oracle Security Alert for CVE-2026-91403 ships Java SE updates that distrust a set of intermediate CA certificates tied to eMudhra. It contains one new patch for Oracle Java SE, described as remotely exploitable without authentication. Customers are told to update Java or apply mitigations listed at ops.java/emudhra and in the Patch Availability Document. No reporter is credited and the page gives no CVSS score or technical detail.

JavaCVSS
CVE-2026-91403eMudhra

Cloud & Infra, AppSecΒ· Added 23 Oct 2026, published 21 Oct 2026

endorlabs.comarticleπŸ›‘οΈ Security

eMudhra CA Compromise: The Trust Stores You Didn't Patch | Endor Labs

The eMudhra CA compromise (disclosed 20 October 2026) involves eight intermediate CA certificates whose private keys can be derived from the certificates themselves. They chain to AAA Certificate Services and three other roots. Browsers block them, but non-browser clients skip revocation and CT checks. Endor Labs finds 25 popular packages with frozen bundled root stores, 11 already patched, and gives a fingerprint-scanning script, test hosts and patch steps.

Endor LabsPythoncertifi+6
CVE-2026-111943eMudhraAAA Certificate Services+9

Supply Chain, AppSec, DevSecOpsΒ· Published and added 21 Oct 2026

blog.talosintelligence.comadvisoryπŸ›‘οΈ Security

Compromised eMudhra intermediate certificates

Cisco Talos describes eight eMudhra intermediate CA certificates (six TLS, two code signing) whose P-384 private keys were trivially recoverable because a flaw in an April 30, 2025 key generation ceremony produced weak keys with only 3 to 8 bytes of entropy. The post lists certificate SHA-256 hashes and serials, browser and Microsoft blocks, and the Go fix (CVE-2026-111943, Go 1.27.3 and 1.26.10) that filters chains by SPKI hash. It covers impact on VPNs, CI/CD and embedded devices, and Snort SIDs 67363 to 67374.

GoChromeVPN+3
CVE-2026-111943eMudhraemSign Root TLS CA - G3+8

Threat Intel, Cloud & InfraΒ· Published and added 21 Oct 2026

aws.amazon.comarticleπŸ›‘οΈ Security

Best practices for integrating IAM Roles Anywhere with your PKI

Best practices for integrating AWS IAM Roles Anywhere with an external PKI so non-AWS workloads get temporary credentials via X.509 certificates. Covers trust anchor placement, certificate attributes (CN, issuer, SAN) in trust policy conditions, short-lived versus just-in-time certificates, and private key protection with PKCS #11, TPM 2.0 and OS certificate stores. Includes credential helper modes (serve, update), expiry monitoring, blue/green trust anchor rotation and a sample CloudFormation template.

AWS IAM Roles AnywhereAWS IAMAWS Private CA+3
X.509trust anchorPKCS #11+5

Identity & Access, Cloud & InfraΒ· Published and added 21 Oct 2026

danielmangum.comarticleπŸ›‘οΈ Security

Your MCU likely escaped the eMudhra intermediate CA compromise

Analysis of the eMudhra intermediate CA compromise disclosed 20 October 2026, in which eight intermediate CA private keys were weak P-384 keys (top 376 bits zero, one key equal to 4) and publicly accessible. It explains web PKI chains and why browsers enforcing Certificate Transparency were not exposed. It argues MCU firmware that bundles only the single root it needs, as in Zephyr's HTTP GET sample, is likely safe unless it trusts an eMudhra or Sectigo cross-signing root.

ZephyrOpenSSLFirefox+1
eMudhraSectigoCertificate Transparency+6

Hardware & RF, otherΒ· Added 22 Oct 2026, published 21 Oct 2026

securityweek.comarticleπŸ›‘οΈ Security

Browsers Block eMudhra Intermediate CAs Over Recoverable Private Keys

Eight intermediate CA certificates issued by Indian CA eMudhra in April 2025 had private keys generated with weak entropy, effectively all zeroes except the last byte, so they could be recovered almost instantly with baby-step giant-step. Mozilla and Google blocked them on 17 October 2026, Apple on 19 October and Microsoft on 20 October. eMudhra blamed a key ceremony script flaw that created a second, weaker key pair.

ChromeFirefoxCloudflare
eMudhraDennis Jacksonbaby-step giant-step+5

otherΒ· Published and added 21 Oct 2026

arxiv.orgpaperπŸ›‘οΈ Security

PQ-Vault: Provably Quantum-Safe Asset Custody for Unmodified Ethereum

PQ-Vault is a custody design for unmodified Ethereum against quantum key recovery. It combines a quantum-safe vault contract, a proof-of-stake sidechain with compact certificates, and an optimistic dispute protocol. The paper proves that compact certificates with classically chosen parameters fall from 128 to about 60 bits against quantum attackers, and bounds a seed-update stake-steering attack. For 65,536 validators a certificate is 0.8 MB and verifies in about 20 ms, and the vault accepts a checkpoint for about 420,000 gas.

Ethereum
compact certificatesstake steering

BlockchainΒ· Added 24 Oct 2026, published 21 Oct 2026

coindesk.comarticleπŸ›‘οΈ Security

A company that vouches for websites had secret keys so weak that 8 of them were cracked

eMudhra, an Indian certificate authority with over 60 million issued certificates, had eight CA private keys that were tiny integers such as 4, 56 and 237. Researcher Scott Helme recovered all eight from public certificates in under a second, and the keys were exposed from April 2025. Mozilla, Chrome, Apple and Microsoft blocked them between 17 and 20 October 2026, but curl, Python, Node.js, Go and Java accepted a forged Stripe API certificate because they skip revocation checks.

cURLPythonNode.js+3
eMudhraSectigoScott Helme+5

otherΒ· Published and added 21 Oct 2026

simonwillison.netarticleπŸ›‘οΈ Security

eMudhra Intermediate CA Compromise

eMudhra Intermediate CA Compromise is a 20 October 2026 link-blog post reporting that private keys of eight eMudhra intermediate CA certificates were compromised. They chain to roots trusted by the Mozilla, Microsoft, Apple and Chrome programs. Software bundling trust lists needs updating: Linux distros must update ca-certificates, and uv 0.13.4, pip 26.2.2 and certifi 2026.10.19 ship new lists. The post does not describe how the keys were compromised.

Pythonpipuv+2
eMudhra

otherΒ· Added 21 Oct 2026, published 20 Oct 2026

blog.cloudflare.comwriteupπŸ›‘οΈ Security

8 eMudhra certificates are compromised. Here's what you need to know

Cloudflare's incident post on the compromise of private keys for eight eMudhra intermediate certificates, disclosed 19 October 2026. The weak keys let an attacker forge certificates for any domain. It describes Cloudflare's patching of trust stores, WARP and cloudflared, tells developers to update the underlying TLS verifier and not disable verification, and points to Dennis Jackson's test site and revocation systems such as CRLSets and upki.

CloudflareCloudflare TunnelWARP+2
eMudhraDennis Jacksonupki+1

Cloud & Infra, Blue Team & DetectionΒ· Added 29 Oct 2026, published 20 Oct 2026

x.comrepoπŸ›‘οΈ Security

Abhinav Singwal (@yogsec) on X

GetSubDomains is an open-source tool by yogsec that enumerates subdomains by querying crt.sh certificate transparency logs. It is aimed at the reconnaissance step of penetration tests and bug bounty work. The source is a short tweet pointing to a GitHub repository, so usage details and options are not given.

crt.shGitHub
GetSubDomainsyogseccertificate transparency

OSINT, Offensive SecurityΒ· Added 21 Oct 2026, published 19 Oct 2026

securityweek.comarticleπŸ›‘οΈ Security

Novel Android RAT β€˜Hirudo’ Replaces Banking Apps With Trojanized Copies

SecurityWeek covers ThreatFabric's findings on Hirudo, an Android banking trojan/RAT delivered via droppers hidden in fake shopping, adult video and short drama apps. It replaces eight Indonesian banking apps with modified copies containing a hooking engine that spoofs signing certificates and hides Accessibility services, screen capture and Play Integrity checks, while providing WebRTC screen viewing, camera access and SMS theft. ThreatFabric advises banks to enforce Play Integrity server-side, use behavioral analytics, treat Accessibility signals as risk inputs, and keep backend transaction-risk controls.

Android
HirudoThreatFabricPlay Integrity+2

Mobile Security, Threat Intel, Malware & REΒ· Published and added 15 Oct 2026

eprint.iacr.orgpaperπŸ›‘οΈ Security

Post-Quantum Certificate-Based PSK Provisioning for WireGuard via Mutual TLS, DTLS, and QUIC: Design and Performance Study

The paper proposes a post-quantum architecture for WireGuard that leaves the core protocol unchanged. A mutually authenticated TLS 1.3 control channel runs over TCP, UDP (DTLS) or QUIC and uses ML-KEM key establishment, with X.509 certificates from a PKI signed with ML-DSA. A shared secret derived from the session's exported keying material is injected into WireGuard's native PSK interface. A Tamarin model of the TLS–WireGuard composition layer checks secrecy, binding and provisioning-order properties and identifies the conditions needed for secure deployment. The authors benchmark handshake latency and CPU time for classical, pure-PQ and hybrid key establishment across the three transports, and compare against the Rosenpass PQ WireGuard baseline.

WireGuardVPN
ML-KEMML-DSARosenpass+5

otherΒ· Added 15 Oct 2026, published 14 Oct 2026

token.securitycourseπŸ›‘οΈ Security

Agentic Universe | Token Security

Token Security's "Agentic Universe" is a free learning hub for security and identity teams securing AI agents. It sits between shallow video-only overviews and long certifications, with short concept videos, technical deep dives written by practitioners, checklists to run against your own environment, and free tools. The fetched page is a landing blurb that doesn't list the modules or the specific tools, so the depth of the content is unconfirmed.

Token SecurityAgentic Universe

Learning, AI SecurityΒ· Added 14 Oct 2026

eprint.iacr.orgpaperπŸ›‘οΈ Security

edaBits in the Exponent (edaBitE) and Issuer-Hiding Blind Signatures from ML-DSA and VOLE-in-the-Head

Presents the first blind signature in which the issuer runs unmodified NIST-standardized ML-DSA, so it works with certified secure elements. Issuance is an ML-DSA signature on a commitment. The blind signature is a VOLE-in-the-head zero-knowledge proof of knowledge of that signature, about 1 MB, under 1 s to produce and 0.5 s to verify. Security reduces to ML-DSA EUF-CMA and the proof system. Issuer-hiding and selective disclosure add a few tens of KB. The paper also introduces edaBitE, a batch consistency check between binary and prime-field commitments that replaces the costly edaBits checks.

ML-DSAVOLE-in-the-Head
edaBitEedaBitsNIST+1

Identity & AccessΒ· Published and added 14 Oct 2026

aws.amazon.comarticleπŸ›‘οΈ Security

Quantum-resistant signing on AWS, Part 2: Enforce your ML-DSA algorithm policy with SCPs and IAM

Explains how to turn a cryptographic algorithm policy (approve ML-DSA-65/87, exclude ML-DSA-44) into enforceable AWS controls using SCPs, IAM policies, permission boundaries and KMS key policies. The key lever is the kms:KeySpec condition key (kms:SigningAlgorithm can't distinguish variants, since all use ML_DSA_SHAKE_256), applied to CreateKey, ReplicateKey, Sign, Verify and GetPublicKey. It also covers surfaces without algorithm condition keys (AWS Private CA, ACM import, IAM server certificate upload, ELB TLS) via provisioning pipelines plus CloudTrail and AWS Config drift detection, and the default-allow risk of deny-lists.

AWSAWS KMSAWS IAM+3
ML-DSAFIPS 204NIST+2

Cloud & Infra, GRCΒ· Published and added 12 Oct 2026

eprint.iacr.orgpaperπŸ›‘οΈ Security

Revisiting Witness-Succinct UC-lifting Compilers

The paper introduces verifiable reconstructible straightline codes (VRSCs) as an abstraction for compiling zkSNARKs into Universally Composable (UC) secure protocols. It shows that the witness-succinct UC compiler of Ganesh et al. (EUROCRYPT 2023) is missing a security requirement: permuting previously revealed evaluation openings yields a fresh accepting proof, which invalidates the claimed simulation argument. The fix uses verifier-enforced disjoint evaluation domains and a pairing-based Fischlin-style instantiation with structured Reed-Solomon codes and jointly computed KZG openings. This brings certificate generation to O(n log n) with constant extra proof size and verification work.

zkSNARKKZGReed-Solomon codes
Universal Composabilityverifiable reconstructible straightline codesGanesh et al.+3

otherΒ· Added 14 Oct 2026, published 12 Oct 2026

securityweek.comarticleπŸ›‘οΈ Security

Let’s Encrypt Cuts Default Certificate Validity to 64 Days Ahead of 45-Day Switch

Let's Encrypt will issue 64-day certificates by default from February 10, 2027, as a step toward 45-day lifetimes planned for 2028, in line with CA/Browser Forum Baseline Requirements. The last 90-day certificate is expected to expire May 11, 2027, and 64-day certificates are available in staging for testing. Automated clients that support ACME Renewal Info (ARI) need no change. Hardcoded renewal schedules should renew at about two-thirds of the lifetime. Authorization reuse drops to 10 days next year and 7 hours in 2028, which removes the need for CAA rechecking.

Let's EncryptACME
CA/Browser Forum Baseline RequirementsACME Renewal InfoCAA rechecking+1

other, GRCΒ· Published and added 12 Oct 2026

securityweek.comarticleπŸ›‘οΈ Security

Google Domains Impacted by Recent ccTLD Hijacks

Google disclosed that attackers hijacked the authoritative DNS of three ccTLDs (.gh for Ghana, .sl for Sierra Leone, .as for American Samoa) and used control of those domains to obtain unauthorized HTTPS certificates covering several Google domains and domains of other organizations. Google blocked the fraudulent certificates in Chrome, worked with issuing CAs to revoke them, and used Certificate Transparency log analysis to find other affected brands, some of which it proactively notified. Google is urging domain owners to monitor CT logs and publish restrictive CAA records after regaining DNS control, since CAs may cache and reuse prior domain-control-validation checks, letting attackers mint new certs even after the hijack ends.

Chrome
.gh ccTLD.sl ccTLD.as ccTLD+3

Threat IntelΒ· Published and added 9 Oct 2026

microsoft.comarticleπŸ›‘οΈ Security

Post-quantum authentication: Why organizations should start testing certificate ecosystems now

Microsoft Security Blog post arguing that post-quantum cryptography planning must extend beyond encrypted-data confidentiality to authentication and certificate ecosystems, since larger PQC certificate chains and new algorithms like ML-DSA-87 can break PKI workflows, HSMs, and legacy infrastructure. It details Microsoft's PQC TLS Pilot Program, launched August 27, 2026, which lets approved certificate authorities (ComSign, DigiCert, HARICA, IdenTrust, Sectigo, Shanghai Electronic Certification Authority, SSL.com) test ML-DSA-87 certificate issuance under the Microsoft Trusted Root Program, plus Windows 11 builds (KB5101681, KB5101684) that support evaluating ML-DSA certificates via Schannel in non-production environments. It lays out a six-step readiness plan: inventory certificate dependencies, map trust relationships, assess vendor roadmaps, identify long-lived infrastructure, build test environments, and plan a multi-year migration.

WindowsSchannelTLS
ML-DSAML-DSA-87PQC TLS Pilot Program+8

Identity & Access, GRCΒ· Published and added 8 Oct 2026

unchained.comarticleπŸ›‘οΈ Security

The randomness question at the heart of your hardware wallet

Unchained explains how hardware wallets generate entropy for bitcoin keys, covering PRNG vs TRNG theory, physical TRNG mechanisms (ring oscillator jitter, diode avalanche noise, radio static reuse), and NIST SP 800-90B / BSI AIS-31 certification. It compares entropy sourcing and secure-element chip suppliers (STMicroelectronics, Microchip, Infineon, Espressif, Silicon Labs) across Trezor, Ledger, Coldcard, BitBox02, Foundation Passport, Blockstream Jade and Block Bitkey, and walks through the July 2026 Coldcard firmware bug that silently bypassed its hardware TRNG for five years, causing real bitcoin losses. It also covers manual dice/coin entropy generation for BIP39 seed phrases, the Dark Skippy nonce-leakage attack, and multisig as the primary mitigation against single-device key-generation failures.

BitcoinColdcardTrezor+3
Coldcard firmware vulnerability (2026)Dark SkippyMilk Sad+6

Hardware & RF, BlockchainΒ· Added 8 Oct 2026, published 7 Oct 2026

aws.amazon.comarticleπŸ›‘οΈ Security

Improving SPIRE security and resiliency with AWS managed services

AWS Security Blog walkthrough on hardening SPIRE (the SPIFFE Runtime Environment) in production by replacing its default self-managed components with AWS managed services: AWS KMS for SVID signing keys, Amazon Aurora PostgreSQL as the datastore, AWS Private CA as the upstream certificate authority, Amazon S3/CloudFront for trust bundle distribution, AWS Secrets Manager for delivering SVIDs to serverless/container workloads, and Amazon Verified Permissions (Cedar policies) for fine-grained SPIFFE-ID-based authorization. It addresses operational concerns like key custody, datastore resiliency, PKI integration, and offline identity validation, and links to a GitHub reference deployment and a SPIFFE/SPIRE-on-AWS workshop.

AWSKubernetesPostgreSQL+2

Cloud & Infra, Identity & AccessΒ· Added 7 Oct 2026, published 6 Oct 2026

blog.googlearticleπŸ›‘οΈ Security

Chrome's Response to Recent ccTLD Registry Hijacks

Google describes a series of registry-level hijacks affecting the .gh (Ghana), .sl (Sierra Leone), and .as (American Samoa) ccTLDs, in which attackers modified authoritative DNS records to obtain unauthorized HTTPS certificates for Google domains and, via Certificate Transparency monitoring, several other major organizations. Chrome mitigated impact by blocking the fraudulent certificates through CRLSets and coordinating revocation with issuing CAs, then urges domain owners to continuously monitor CT logs and publish restrictive CAA records with ACME account bindings, since cached domain-control-validation state can let attackers mint new certs even after DNS control is restored.

Chrome

Threat Intel, Blue Team & DetectionΒ· Added 7 Oct 2026, published 6 Oct 2026

eprint.iacr.orgpaperπŸ›‘οΈ Security

PoP! Goes the VOLE: Shorter Proofs of Possession for KEM Certificates

This IACR ePrint paper proposes and benchmarks a non-interactive Proof of Possession (PoP) for the code-based post-quantum KEM HQC, built using the VOLE-in-the-Head (VOLEitH) zero-knowledge paradigm, to solve the practical problem of issuing KEM-based certificates needed by protocols like KEMTLS. The authors integrate their HQC PoP into the ACME certificate-issuance protocol and compare it against existing PoP schemes for Kyber and FrodoKEM, showing Kyber issues certificates faster but at the cost of protocol or NIST-standard compatibility, while their HQC-based PoP keeps compatibility and achieves smaller proof sizes, which matters under unstable-network conditions due to larger KEM-based CSRs.

ACMEHQCKyber+2

Identity & AccessΒ· Added 8 Oct 2026, published 6 Oct 2026

eprint.iacr.orgpaperπŸ›‘οΈ Security

Role-Specific Signature Placement in TLS 1.3: Cost Propagation and PQC Migration

An IACR eprint paper evaluating all 13-cubed ways to assign 13 post-quantum/traditional signature parameter sets across the Root, Intermediate and Leaf roles of a TLS 1.3 certificate chain, holding the algorithm set fixed and varying only placement. Across 286 three-algorithm groups, median max/min ratios reach 2.085x for TLS handshake latency, 4.310x for certificate body size and 4.551x for path-validation cost purely from role order, with Leaf placement mattering far more than Root/Intermediate swaps. It also shows that looking only at Certificate-message size can misrank candidates such as ML-DSA-65 versus SLH-DSA-SHAKE-192s once the Leaf signature in CertificateVerify and full authentication-path cost are included, arguing PQC certificate-chain design must account for role-specific cost under real network/load conditions.

TLS 1.3X.509ML-DSA
ML-DSA-65SLH-DSA-SHAKE-192s

AppSecΒ· Added 8 Oct 2026, published 5 Oct 2026

github.comwriteupπŸ›‘οΈ Security

Xray-core concealed a certificate verification bypass vulnerability

A security researcher's first-person disclosure describing a certificate verification bypass in Xray-core (a popular censorship-circumvention proxy): when its pinnedPeerCertSha256 option skips regular TLS verification, a MITM attacker can insert a leaf certificate anywhere in the certificate chain and have the custom pinning logic incorrectly validate it, effectively eliminating certificate verification. The writeup also documents how the vulnerability was silently fixed with a misleading "simplify the code" commit message and left undisclosed to users for nearly half a year until the reporter filed a GitHub Security Advisory.

Xray-core
pinnedPeerCertificateChainSha256pinnedPeerCertSha256allowInsecure+1

AppSecΒ· Added 5 Oct 2026, published 4 Oct 2026

orca.securityadvisoryπŸ›‘οΈ Security

Critical Citrix NetScaler Zero-Days Under Active Exploitation

Analysis of two CVSS 9.5 Citrix NetScaler ADC/Gateway zero-days, CVE-2026-88771 (unauthenticated RCE through improper input validation in the management interface, affecting default deployments) and CVE-2026-88772 (memory overflow in DTLS, enabled by default on VPN virtual servers). It lists six more high-severity flaws patched in advisory CTX697096, the affected and fixed versions, and the CISA KEV listing with a federal deadline of 2026-09-30. It advises checking for compromise before patching, since patching can destroy forensic evidence, and gives response steps: isolate, revoke credentials, rebuild firmware, rotate keys and certificates.

Citrix NetScalerVPN
CVE-2026-88771CVE-2026-88772CVE-2026-88773+7

Cloud & Infra, Threat IntelΒ· Published and added 29 Sep 2026

arxiv.orgpaperπŸ›‘οΈ Security

Certified Multi-Source Integrity for Structured Agent Actions

This arXiv paper proposes a certifier for structured, privileged agent actions such as paying an invoice, assembled from potentially corrupted documents and tool outputs, formalizing when multi-source corroboration can be trusted under indirect prompt injection. It uses a corruption-radius rule counted via minimum hitting sets over corruption-distinct evidence classes so laundered or re-published copies cannot fake a quorum, plus deterministic reconciliation and trusted anchors for single-sourced fields. Evaluated on 70,966 sanctions entities and 450 software-supply-chain provenance records, and against five LLM agents where a realistic injection fools all but one model and existing action-gating or provenance baselines are broken while the certifier admits no unsafe action.

LLM

AI SecurityΒ· Added 2 Oct 2026, published 28 Sep 2026

cisa.govadvisoryπŸ›‘οΈ Security

CISA KEV Catalog Additions β€” Check Point, Arista VeloCloud, F5 BIG-IP (Sept 22, 2026)

CISA added four vulnerabilities to the Known Exploited Vulnerabilities catalog on 2026-09-22 based on evidence of active exploitation: two Check Point multi-product flaws (improper certificate validation CVE-2026-85102, path traversal CVE-2026-93616), an Arista VeloCloud Orchestrator improper input validation bug (CVE-2026-93952), and an F5 BIG-IP APM heap-based buffer overflow (CVE-2026-94127). The alert ties the additions to BOD 26-04, which has FCEB agencies prioritize remediation of KEV CVEs on publicly exposed assets that give total control, and to checking for prior compromise before patching.

CISA KEVCheck PointArista VeloCloud Orchestrator+1
CVE-2026-85102CVE-2026-93616CVE-2026-93952+4

Threat Intel, GRCΒ· Added 26 Sep 2026

arxiv.orgpaper🧠 AI

Scope Before You Persist: Preventing Cross-Family Interference in Agent Memory

This arXiv paper studies persistent memory for frozen-model LLM agents, showing that matching retrieval scope to certification scope prevents locally-valid skill edits from interfering with unrelated task families. Using ORC (Orthogonal Regression Control), an execution-grounded gate for accepting persistent skill edits, on a 12-round code-repair benchmark (ProcStream-RSI), the authors show Scoped-ORC raises mean trajectory utility from 0.713 (global memory) to 0.816 and eliminates harmful deployments (from 6/8 to 0), while accepting far more updates (63 vs 12) with zero harmful acceptances across 27 paired streams.

ProcStream-RSIOrthogonal Regression Control

agents, researchΒ· Added 26 Sep 2026

nextgov.comarticle🧠 AI

Tech bills of the week: Creating an AI-focused agency, reviewing AI-assisted cyber attacks and more

A weekly congressional tracker detailing multiple new AI bills: a Casar/Sanders proposal to create a Department of Artificial Intelligence and pause advanced AI development pending a ban on artificial superintelligence; Markey's Cybersecurity and AI Board of Investigations modeled on the NTSB to probe AI-driven cyberattacks (citing an OpenAI system breaching Hugging Face and an Australian health database); Bennet/Welch's Federal Digital Commission expansion for frontier model pre-certification and civil penalties; AI 'kill switch' mandates from Kean and Kennedy; Kelly's AI Horizon Fund taxing tech profits to fund worker transition programs; a bipartisan FTC transparency bill from Coons, Britt, Schatz and Lankford; Bonamici's education/workforce AI framework; and two Barrett bills on VA AI transparency and human review of AI-assisted disability claims.

OpenAIHugging FaceSen. Ed Markey+16

ai-policyΒ· Added 26 Sep 2026, published 25 Sep 2026

arxiv.orgpaperπŸ›‘οΈ Security

Resource-Optimized and Energy-Aware Agentic AI Framework Anchored on Blockchain for Secure Software Supply Chains

This arXiv paper proposes a blockchain-anchored agentic AI framework for securing the software development lifecycle: specialized LLM-backed agents handle source integrity, SBOM/dependency analysis, CI configuration auditing, artifact verification, and runtime policy evaluation, each producing a cryptographically signed attestation recorded on a permissioned blockchain via smart contracts (agent registry, immutable attestation log, release-policy module). Agent-to-agent and agent-to-blockchain communication is secured through a consortium-operated certificate authority, and a sequence flow illustrates a source-code security agent anchoring its attestation on-chain to trigger an allow/block deployment decision. It's a conceptual architecture paper rather than an evaluated deployment, aiming to give decentralized, tamper-resistant provenance for agentic AI monitoring the software supply chain.

SBOMLLM

Supply Chain, AI Security, DevSecOpsΒ· Added 2 Oct 2026, published 25 Sep 2026

aws.amazon.comarticleπŸ›‘οΈ Security

Architecting a secure landing zone in the AWS European Sovereign Cloud

AWS Security Blog walkthrough of building a secure, production-ready landing zone in the new AWS European Sovereign Cloud (aws-eusc partition), covering multi-account governance via AWS Control Tower/AFT, IAM Identity Center federation as Terraform code, centralized logging into a Log Archive and Security Tooling account, network perimeter design with dedicated Direct Connect PoPs and VPC endpoints, KMS/External Key Store data protection, and partition-aware CI/CD for pushing container images, AMIs, and artifacts across the partition boundary. It maps design decisions to the AWS Security Reference Architecture and Well-Architected Framework, distinguishes hard partition boundaries from configurable choices, and references BSI C5:2020, SOC 2, and ISO 27001/27017/27018/27701 certifications for EUSC.

AWSAWS European Sovereign CloudAWS IAM+3
BSI C5:2020SOC 2ISO 27001+3

Cloud & Infra, GRC, Identity & AccessΒ· Added 7 Oct 2026, published 16 Sep 2026

latent.spacewriteup🧠 AI

Underwriting Superintelligence: Backing Agents you can Sue β€” Rune Kvist, AIUC

Latent Space interview with Rune Kvist, cofounder of AIUC (AI Underwriting Company), on its $40M Series A and AIUC-1 β€” a quarterly-updated standard for agent security, safety and reliability that pairs technical controls with third-party testing (jailbreak resistance, hallucination rates, data leakage) and real Lloyd's of London-backed insurance. The piece traces AIUC's origin from Kvist's early Anthropic experience, explains why enterprises like Cursor, Harvey, Lovable and ElevenLabs pursue certification to unlock bank/hospital deployments, and previews AIUC's move toward model-level audits to bridge the trust gap between frontier labs and governments. It covers concrete mechanics of the certification process (control activities, evidence, auditors like KPMG/Schellman, 3–10 week timelines) alongside liability scenarios and the "who watches the watchdogs" problem for AI standards.

Model Context ProtocolOpenClaw
Rune KvistAIUCAIUC-1+23

ai-policy, evalsΒ· Added 29 Sep 2026, published 16 Sep 2026

ethresear.charticleπŸ›‘οΈ Security

Post-Quantum: Lattice or Hash-Based (one question, two right answers)

A deep-dive field guide to choosing between lattice-based (ML-DSA/FN-DSA) and hash-based (SLH-DSA) post-quantum signatures, built from interviews with the designers and implementers behind both NIST standards and their deployments. It walks through Mosca's-inequality-style migration timing, CNSA 2.0's split between lattice signatures and stateful hash-based LMS/XMSS for firmware, the stateful-signature "footgun," and why the broader internet (TLS/WebPKI, via Merkle Tree Certificates) is converging on lattices while Ethereum's post-quantum consensus roadmap (leanXMSS, EIP-8292, EIP-8288 aggregation) and Algorand's live Falcon-1024 state proofs lean hash-based or scheme-neutral because of aggregation and on-chain storage constraints. It closes with a decision framework and a rundown of NIST's round-3 "onramp" signature candidates (MAYO, SQIsign, HAWK, etc.).

EthereumBitcoinAlgorand+3
ML-DSASLH-DSAFN-DSA+16

Blockchain, otherΒ· Added 3 Oct 2026, published 15 Sep 2026

huntress.comwriteupπŸ›‘οΈ Security

Google Doc Sidebar Sends Mac and Windows Users Down Different Paths to Malware

Huntress SOC analysts Ryan Dowd and Jon Semon tore apart a live social-engineering campaign that began with a fake CoinDesk marketing exec DMing a researcher a Google Doc containing a container-bound Apps Script sidebar. The script ran client-side without OAuth consent, exfiltrated victim IP/geolocation/wallet presence via the Telegram API, then routed macOS users to a piped zsh/DMG AMOS stealer chain and Windows users through ClickOnce and PowerShell loaders using three stolen or fraudulent code-signing certificates (a Norwegian company, Discord, and Lenovo). The Windows chain culminated in NetSupport Manager RMM abuse, a Ledger wallet implant, and a self-generated rogue root certificate authority (spoofing Google Trust Services) installed via MsBuild.exe hollowing to silently intercept HTTPS traffic, which the authors flag as the artifact most likely to survive incident remediation short of full reimaging.

WindowsmacOSGoogle Workspace+3
AMOS stealerClickFixMacSync+6

Threat Intel, Malware & REΒ· Added 11 Sep 2026, published 15 Sep 2026

huntress.comwriteupπŸ›‘οΈ Security

AD Rights Management Service (Part 2): Extraction, Offline Decryption, and the Unrotatable Key

Part 2 of a Huntress series on AD RMS shows how any Service Group member can export the deployment's root SLC private key via the admin SOAP surface's Trusted Publishing Domain (TPD) operation, then use it to offline-decrypt any document the cluster has ever protected β€” no server contact required. The author goes further, forging XrML Rights Account Certificates signed with the stolen SLC key to trick a live AD RMS server into issuing genuine use licenses for arbitrary/impersonated identities (a "hybrid" of a Golden Ticket and Silver Ticket), and releases the SharpRMS tool that implements extraction, decryption, and RAC forgery. Because the SLC key has a 255-year certificate and no rotation mechanism, the compromise is permanent for all previously protected content, unlike KRBTGT which can be reset to invalidate forged Kerberos tickets.

Active DirectoryAD RMSSharpRMS+3
DisARMSXrMLServer Licensor Certificate+8

Offensive Security, Identity & AccessΒ· Added 11 Sep 2026, published 10 Sep 2026

huntress.comarticleπŸ›‘οΈ Security

AD Rights Management Service (Part 1): Architecture, Deprecation, and Reconnaissance

Part 1 of a Huntress research series on Active Directory Rights Management Services (AD RMS), explaining its PKI-based trust model (Server Licensor Certificate signing content keys), why it's still deployed despite Microsoft's deprecation push toward Azure Information Protection, and how to fingerprint and enumerate a cluster from an unprivileged domain account. It introduces SharpRMS, a custom C# tool that speaks the AD RMS SOAP protocol to enumerate clusters and rights-policy templates, and shows how local AD RMS Service Group membership (not Domain Admin) gates the administrative surface where the SLC private key can eventually be reached β€” setting up Part 2's key extraction and offline decryption.

Active DirectoryWindows.NET+1
DisARMSMSRC Case 33210Sean Metcalf+1

Offensive Security, Identity & AccessΒ· Published and added 8 Sep 2026

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