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securityweek.comarticle🛡️ Security

Malicious Claude Code Extension Served in Cursor Supply Chain Attack

Malicious versions 2.1.312 and 2.1.313 of the anthropic.claude-code extension were live in the Cursor VS Code Extension Marketplace for about 11 hours on October 29. The JavaScript ran at module load, collected host details, tried to install an SSH key, open a reverse SSH tunnel and set persistence on macOS and Windows. Kevin Beaumont estimates about 5,000 downloads. Cursor rotated keys, rebuilt the marketplace and published a detection script and IoCs; uninstalling alone does not remove the dropped persistence scripts.

Claude CodeCursorVS Code+3
Kevin BeaumontAnthropicMicrosoft

Supply Chain, Threat Intel· Published and added 2 Nov 2026

x.comtool🧠 AI

zahT3 (@zahT3zuo) on X

Hotseat is a free, open-source macOS menu bar app that moves Claude Code and Claude Desktop to another of the user's Claude accounts in one click and returns to the same session. Sessions, settings, skills and MCP servers are shared, so `claude --resume` works under either account. When a session hits a usage limit, it offers to continue under another account. It never reads tokens or cookies. Install with Homebrew.

Claude CodeClaude DesktopmacOS+2
HotseatAnthropic

coding-agents· Added 1 Nov 2026, published 31 Oct 2026

microsoft.comwriteup🛡️ Security

Inside a malicious Claude Code-branded extension and its persistent SSH backdoor

Microsoft Threat Intelligence analyzes a tampered anthropic.claude-code extension (versions 2.1.312 and 2.1.313) served on the Cursor marketplace on 29 October 2026. The injected JavaScript loader adds an SSH key labeled svc-telemetry, opens a reverse SSH tunnel and sets up persistence on macOS, Linux and Windows. The post gives cleanup steps, IOCs and Defender XDR hunting queries. VS Code Marketplace and npm were not affected.

CursorClaude CodeSSH+3
Protocol Tunneling (T1572)reverse SSH tunnelMicrosoft Threat Intelligence+2

Supply Chain, Blue Team & Detection, Malware & RE· Published and added 31 Oct 2026

bleepingcomputer.comarticle🛡️ Security

Malicious Claude Code extension on Cursor planted SSH backdoors

A malicious version 2.1.313 of Anthropic's Claude Code extension was served from Cursor's marketplace for about 11 hours on 29 October 2026, reaching up to 5,000 developers. A JavaScript loader prepended to extension.js added an attacker SSH key, a reverse tunnel and macOS/Windows persistence, and reported to 134.209.82[.]225. Coding errors likely blocked SSH access on many hosts. Cursor removed it and rotated keys; victims should look for an 'svc-telemetry' SSH key.

Claude CodeCursorVS Code+3
PhorionOpenSourceMalwareLaunchAgent persistence+1

Supply Chain, AI Security, Threat Intel· Published and added 30 Oct 2026

securityweek.comarticle🛡️ Security

TeamViewer Flaw Could Let Malicious Hosts Take Over Support Technicians’ Machines

CVE-2026-111585 (CVSS 8.8) is an integer overflow in the remote-control screen processing of TeamViewer clients on Windows, macOS, Linux and Android. A malicious or compromised host can announce an oversized screen surface (for example 32768 by 32768 at 32 bpp), forcing a software decode path and an out-of-bounds write that crashes the viewer or runs code. Remedio's research shows a pointer overwrite routed to WinExec. Version 15.83 fixes it, along with CVE-2026-92372, CVE-2026-92374 and six local privilege escalation bugs.

TeamViewerWindowsmacOS+3
CVE-2026-111585CVE-2026-92372CVE-2026-92374+3

AppSec, Offensive Security· Published and added 30 Oct 2026

phorion.iowriteup🛡️ Security

Backdoor in Claude Code for VS Code extension on the Cursor Marketplace

Phorion analyzes a backdoor injected into versions 2.1.312 and 2.1.313 of the official Claude Code for VS Code extension on the Cursor Marketplace. An IIFE prepended to extension.js plants an SSH key, opens a reverse SSH tunnel to 134.209.82[.]225, persists via a fake com.apple.sysmond LaunchAgent and beacons host recon. A macOS systemsetup check bug usually stops SSH from being enabled. The post lists detections and remediation.

Claude CodeCursorVS Code+3
Phorionsvc-telemetrycom.apple.sysmond+1

Supply Chain, Malware & RE, Blue Team & Detection· Added 31 Oct 2026, published 30 Oct 2026

github.comrepo🛡️ Security

Show HN: Auto Dismiss Mac OS "Allow <app> to find devices on local networks?"

dontallow is a two-file Swift launchd agent for macOS 15 and later that clicks "Don't Allow" on the "find devices on local networks" prompt. It watches the UserNotificationCenter process through an Accessibility observer, supports pause and allowlist, and can decode the Local Network rule store to show orphaned rows. It explains why Chromium temp-bundle paths make the prompt recur, and gives a PPPC profile route for fleets.

macOSSwiftlaunchd+2
Local Network privacy promptPPPCTCC

Cloud & Infra· Added 30 Oct 2026, published 29 Oct 2026

github.comrepo🛡️ Security

Mas0nShi/CVE-2026-112445

CVE-2026-112445 is a macOS local privilege escalation in which the launchd job com.apple.xpc.uscwoap runs /bin/bash as root with stdin tied to /dev/console. A non-administrator console user can start the job and inject commands into the console input queue with TIOCSTI, so Bash executes them as UID 0. Apple did not list the CVE in its advisory; macOS 27.2 removes the job configuration.

macOSlaunchdBash
CVE-2026-112445TIOCSTIcom.apple.xpc.uscwoap+1

Offensive Security· Added 2 Nov 2026, published 29 Oct 2026

x.comtool🧠 AI

Big Bull (@BIGBULLapp) on X

clauth is a Rust terminal UI for Claude Code that combines multi-account switching with a live 5h / 7d usage monitor. A fallback chain moves the user off an exhausted account before Claude Code blocks. It supports Pro, Max, Team and Enterprise OAuth accounts and custom API endpoints on Linux, macOS and Windows. The post notes that auto-switching means the tool decides when accounts change.

Claude CodeRustOAuth+4
clauthAnthropic

coding-agents, ai-infra· Added 30 Oct 2026, published 28 Oct 2026

brangus.iotool🧠 AI

Survival LLM: AI assistant and emergency library that runs on your own computer

Survival LLM is a free, open-source desktop app for macOS (Apple Silicon) and 64-bit Windows that runs an AI model and an offline emergency library on the user's computer. It checks the machine's memory, downloads a fitting model, and answers from sources such as Wikipedia, WikiMed, Ready.gov and CDC guidance, citing each article. Users can add their own files; version 0.3.2 is dated October 2026.

LLMRAGmacOS+1
Survival LLMWikipediaWikiMed+9

llm-apps, inference· Added 28 Oct 2026, published 27 Oct 2026

securityweek.comarticle🛡️ Security

iOS, macOS 27.2 Patch 286 Bugs; Fix for Exploited Flaw Backported to iOS 18

Apple's 27.2 releases fix 286 vulnerabilities across iOS/iPadOS (163) and macOS Golden Gate (263), with memory corruption in WebKit and the kernel, sandbox escapes, Gatekeeper bypasses and a remote code execution bug in Remote Management. iOS and iPadOS 18.7.11 backport the fix for CVE-2026-86950, an exploited zero-day found by Meta's product security team and first patched in 26.7.1. Patch counts for tvOS, watchOS, visionOS, Safari and the 26.7.2 and Sequoia 15.8.2 releases are also listed.

iOSmacOSSafari+2
CVE-2026-86950Metasandbox escape+2

Mobile Security, other· Published and added 27 Oct 2026

securityweek.comarticle🛡️ Security

Dead Popcorn Time Updater Put Millions of Computers at Risk of Takeover

Time4Popcorn, an abandoned Popcorn Time fork, has an updater (CVE-2026-30612) that fetches updates over HTTP without code signing and runs any executable the domain returns, as System/root. Eye Security registered abandoned update domains, saw millions of Windows, macOS and Android clients, and pushed a fix disabling the updater on about 2 million systems by March 2026. Shadowserver took over the sinkholed domains; Eye Security advises uninstalling the app.

Popcorn TimeWindowsmacOS+2
CVE-2026-30612Eye SecurityShadowserver Foundation+2

Threat Intel, AppSec· Published and added 27 Oct 2026

x.comthread🧠 AI

Akash Rajagopal (@akashsairaja) on X

Ollama overview thread by Akash Rajagopal on X. It lists six steps: install on macOS, Linux, Windows or Docker; run `ollama run gemma4`; use the REST API on localhost:11434 (/api/chat); call it from ollama-python and ollama-js; llama.cpp as the README's supported backend; and `ollama launch claude` to connect Claude Code. Codex, OpenCode, Copilot CLI and Droid also work. The thread cites 184k GitHub stars and an MIT licence.

Ollamallama.cppClaude Code+10
Gemma 4Akash Rajagopal

inference, coding-agents· Added 27 Oct 2026, published 26 Oct 2026

x.comtool🧠 AI

Dan Kornas (@DanKornas) on X

HiRoute is an open-source (Apache-2.0) local model router for developers using agent clients such as Codex and Claude Code. Routing plans judge each new message and send routine work to economical models, while harder design decisions and fixes stay on the primary model. It supports custom task branches, ordered failover candidates with explicit exhaustion, per-session cost and usage records, and runs as a macOS desktop app or a Linux CLI and daemon.

CodexClaude CodemacOS+1
HiRouteDan Kornas

ai-infra, coding-agents· Added 25 Oct 2026, published 24 Oct 2026

securityweek.comarticle🛡️ Security

In Other News: Tor Exit Relays Hijacked, Banks Spot Rogue AI Agents, Self-Rebuilding macOS Ransomware

SecurityWeek's weekly roundup covers Heartbreaker, a Rust macOS ransomware that recompiles itself to change its hash, and 333 Tor exit relays running Ebury that redirected SSH logins to harvest passwords. It also covers APT28 Hookedge attacks on a NATO shipbuilder, the Railway and PingCAP breaches, ISO/IEC 27090 for AI threats, and US banks blocking unsanctioned AI agents.

macOSRustTor+2
HeartbreakerPatrick WardleEbury+16

Threat Intel, Malware & RE, AI Security· Published and added 23 Oct 2026

github.comrepo🛡️ Security

x86rc/unthemidator

Unthemidator is an automated unpacker for binaries protected with Themida, Code Virtualizer and WinLicense (v3.0 to v3.2.6.0, experimental v4.0). It works without executing the target, handles x86 and x64 exe, dll and sys files, decrypts imports, restores the IAT, rebuilds the PE and identifies VM versions and entry points. It does not devirtualize or unmutate code. Releases cover Windows x64 and macOS Apple Silicon.

ThemidaCode VirtualizerWinLicense+2
FALCON VMLION VM

Malware & RE· Added 27 Oct 2026, published 23 Oct 2026

x.comrepo🧠 AI

Dan Kornas (@DanKornas) on X

aula-mcp is an open-source (MIT) TypeScript MCP server that connects an AI client to Denmark's Aula school platform. It exposes tools for profiles, calendar events, messages, notifications, posts and weekly plans. MitID credentials and OAuth tokens are stored in macOS Keychain or an AES-256-GCM encrypted file. The HTTP server binds to 127.0.0.1, and the presence write tool stays off until AULA_MCP_WRITE=1 is set.

Model Context ProtocolTypeScriptClaude Code+3
AulaMitIDDan Kornas

mcp· Added 23 Oct 2026, published 22 Oct 2026

opensourcemalware.comwriteup🛡️ Security

LiteLLM 1.107.0 PyPI Wheel Contains a Credential Stealer and Persistent Python Backdoor

LiteLLM 1.107.0 macOS x86-64 PyPI wheel analyzed by OpenSourceMalware contains three injected files (cook.pth, cook.py, sitecustomize.py) that run on every Python start. The payload, called privcollect, steals browser, SSH, cloud, CI/CD and AI-tool credentials, then uploads an AES/RSA-encrypted bundle to www.litellm.dev/healthcheck. A forked loader also fetches domain.txt from GitHub and executes /codepy hourly. The post lists IOCs, hashes and remediation steps.

LiteLLMPyPIPython+1
privcollectTeamPCPUpwind+4

Supply Chain, Malware & RE, Threat Intel· Published and added 21 Oct 2026

x.comthread🧠 AI

Vishesh Raheja (@entropyconquers) on X

GPT Voice is a free, open-source Mac app by Vishesh Raheja that brings ChatGPT's dictation to any macOS app. A shortcut starts recording, and the transcript is pasted where the user is typing. It uses the ChatGPT Pro subscription, so it needs no API key or extra subscription. The author built it after Handy handled coding prompts poorly and they did not want to pay for Wispr Flow. The thread gives no details on local versus API transcription or latency.

ChatGPTCodexmacOS
Vishesh RahejaT3 CodeGPT Voice+3

multimodal, coding-agents· Added 22 Oct 2026, published 21 Oct 2026

hackers-arise.comarticle🛡️ Security

Digital Forensics: Analyzing Systems with Live-Forensicator

Live-Forensicator is a cross-platform (Windows, Linux, macOS) live response toolkit built around Forensicator.ps1. The Hackers Arise walkthrough runs it on Windows with case details, then reads the HTML report: event log summary (Event IDs 4624, 4798, 4799, 4688) and a risk rating. It also shows optional AI analysis through Ollama with a Mistral model, configured in config.json, and warns that the tool triggers AV and that AI slows runs.

PowerShellWindowsOllama+2
Live-ForensicatorForensicator.ps1WinPmem+7

Blue Team & Detection, Learning· Published and added 20 Oct 2026

github.comrepo🧠 AI

ralphtradesz/trading-hub

Trading Hub is a free macOS desktop trading platform built with C#/.NET 10 and Avalonia. It uses the user's Claude Code subscription: a chat writes and fixes C# strategies, an in-app MCP server lets Claude run backtests, optimizations and walk-forwards and write reports, and a risk agent proposes position sizes. Install and a Windows port are both driven by Claude Code prompts. License is MIT with Commons Clause.

Claude CodeModel Context Protocol.NET+6
ClaudeATASDatabento+11

mcp, coding-agents· Added 19 Oct 2026, published 17 Oct 2026

huggingface.copaper🧠 AI

OpenGCUA: Toward a Fully Open Stack for Generalist Computer Use

OpenGCUA, from Alibaba's MAI-UI team, is an open stack for generalist computer-use agents (GCUAs), where the model chooses how to observe, act and organize work across GUI, accessibility-tree, API and shell interfaces. Its design combines code execution (GUI actions written as programs with loops and branches) with harness-to-model decision transfer. On OSWorld-v2 it raises mean partial score by +19.6 points across eight models, including GPT-6 Astra and Claude Opus 5, and cuts reported steps per task by 53%. The release includes the harness, prompts, evaluation trajectories, a macOS real-device harness, a cross-device SDK and an interactive lab. It also shows large efficiency gaps between models: Qwen3.8-Max used 19.4x the reasoning tokens of GPT-6 Astra on real macOS tasks.

macOSGitHubHugging Face
OpenGCUAMAI-UIAlibaba+6

agents, research, evals· Added 17 Oct 2026

x.comthread🧠 AI

AmingIn_AI (@aming_inAI) on X

A tweet from AmingIn_AI describes a macOS screenshot-annotation tool. On release it saves the screenshot, a crop and the user's marks locally, then copies a 127.0.0.1 link. Claude Code or Codex on the same Mac can fetch that link and receive the marked image plus app/window info, and nothing is uploaded. It shows a local, privacy-preserving way to hand visual context to coding agents without MCP or cloud upload.

Claude CodeCodexmacOS
AmingIn_AI

coding-agents, multimodal· Added 17 Oct 2026, published 16 Oct 2026

decrypt.coarticle🧠 AI

Developer Who Cloned Photoshop With AI Just Did the Same to Microsoft Office

Decrypt reports that developer Brandon Thomas released WordCraft, GridCraft and DeckCraft, MIT/Apache-2.0 open-source clones of Word, Excel and PowerPoint. They were written in Rust with Anthropic's Claude (Opus 5.5) as a clean-room rebuild and run natively on Windows, macOS, Linux and BSD, and in a browser. Coverage is high (WordCraft 88% of ribbon features, GridCraft 513 of 523 Excel functions), but the authors rate them only about 50–60% ready for real work. Every button is also an MCP command, so agents like Claude can drive the apps. The article is a useful data point on what AI-assisted "vibe coding" can produce in under two weeks, and on where it still falls short (file fidelity, stability).

RustClaudeModel Context Protocol+4
Brandon ThomasWordCraftGridCraft+10

coding-agents, mcp· Published and added 14 Oct 2026

github.comrepo🧠 AI

Show HN: Atticus – Hold-to-talk voice assistant for macOS that runs on Claude -p

Atticus is an MIT-licensed macOS 26+ hold-to-talk voice assistant that uses Apple's on-device speech transcription and runs AI requests through Claude Code on an existing Claude Pro/Max plan, so no API key is needed. Simple commands skip the model entirely (apps open in 0.08 s), actions it has seen once are learned as zero-cost shortcuts, and a "remember…" memory persists across asks. It also sets up no-AI background watchers (polling every 5 s) and holds itself to a budget of a median under $0.002 and 6 s per AI ask, with a system prompt under 10,000 characters.

Claude CodeClaudeCodex+6
AtticusAnthropicApple+1

agents, coding-agents, multimodal· Published and added 12 Oct 2026

github.comrepo🧠 AI

Show HN: Let your AI agents paint big arrows, boxes and text on your screen

bigarrow is an MIT-licensed, single-binary Swift macOS CLI that draws a click-through arrow and sign over all windows so an AI agent can show a human where to click, paste or act (permission prompts, 2FA, OAuth consent). It ships an Agent Skills package (installed via `bigarrow install-skill`) for Claude Code and Codex, with JSON output and exit codes, and can target by Accessibility label, coordinates, window or Peekaboo snapshot. The README documents the skill's token cost (182 tokens for the description, 1,398 for the instructions) and 104 automated tests.

SwiftmacOSClaude Code+6
bigarrowNameplatePeter Steinberger+2

coding-agents, prompting, agents· Published and added 9 Oct 2026

github.comrepo🛡️ Security

chainguard-dev/malcontent

malcontent is Chainguard's open-source malware/supply-chain discovery tool that analyzes binaries (ELF, Mach-O, PE, a.out) and scripting-language source across Linux, macOS and Windows using 14,500+ YARA rules (including third-party rules from Avast, Elastic, FireEye, Mandiant, Nextron and ReversingLabs). Its standout feature is differential analysis ("mal diff"), which compares two versions of a build artifact or OCI image against a known-good baseline to surface newly introduced risky behaviors — the technique the project demonstrates on the 3CX supply-chain compromise by flagging unexpected high-risk changes to libffmpeg. It also supports threshold-based scanning ("mal scan") and unfiltered capability enumeration ("mal analyze"), and is designed to run inside CI/CD pipelines, including air-gapped environments via embedded rules.

YARAGoRust+4
3CX Compromise

Supply Chain, Malware & RE, Blue Team & Detection· Added 8 Oct 2026

blog.talosintelligence.comadvisory🛡️ Security

Microsoft, Adobe, Apple, and Foxit vulnerabilities

Cisco Talos discloses eight vulnerabilities patched by vendors: a Photoshop installer privilege escalation (CVE-2026-48388), a macOS CoreWLAN information disclosure bug, two Foxit Reader flaws including a JavaScript CBF_Widget remote code execution (CVE-2026-57256) and an Array use-after-free (CVE-2026-91799), and four Windows kernel-driver bugs — NETIO.sys information disclosure (CVE-2026-50475), two Cloud Files Mini Filter Driver issues (use-after-free CVE-2026-58613 and type confusion CVE-2026-80093), and a tcpip.sys out-of-bounds read (CVE-2026-49177). Each advisory gives the affected version and trigger mechanism, and Talos notes Snort coverage is available for detection.

Adobe PhotoshopmacOSFoxit Reader+2
CVE-2026-48388CVE-2026-57256CVE-2026-91799+12

AppSec, Offensive Security· Published and added 7 Oct 2026

endorlabs.comarticle🧠 AI

| Blog | Endor Labs

Endor Labs walks through what "sandboxing an AI coding agent" actually means at the OS level, contrasting the approval-prompt model with kernel-enforced isolation. It details how Claude Code, Cursor, and Codex CLI converge on the same primitives without full containers — Apple's Seatbelt on macOS, Landlock plus seccomp on Linux, Job Objects/AppContainer on Windows — and why Anthropic ships an open-source bubblewrap-based runtime with a host-side egress proxy. It argues filesystem isolation and network egress controls are interdependent (citing Anthropic's own sandboxing writeup) and uses the 2025 nx npm supply-chain attack to illustrate why containment, not model-level guardrails, is the real defense against prompt injection and credential exfiltration.

Claude CodeCursorCodex+1
Endor LabsCodex CLIAnthropic+1

coding-agents· Published and added 6 Oct 2026

x.comthread🧠 AI

Meer Tarbani - Growth & Engineering (@MeerTarbani) on X

Sidekick is an open-source macOS plugin for Claude Code that lets you define a one-sentence persona (e.g. "a blunt senior Rust dev") and drive a coding session hands-free by voice: it listens via Apple's on-device speech recognition, speaks answers with macOS voices, and lets you interrupt it mid-reply or say "stop" to cancel a turn. It also surfaces Claude's multiple-choice decisions as spoken questions, matching answers like "the second one" against an echo-filtered transcript so the assistant doesn't hear and respond to its own voice. Implementation is a ~500-line TypeScript Claude Code hooks module plus a 90-line Swift speech listener, runs fully local with zero servers and zero telemetry, and installs via the `claude plugin marketplace`/`claude plugin install` commands.

Claude CodeTypeScriptSwift+1
SidekickMeer TarbaniApple

coding-agents, multimodal· Published and added 4 Oct 2026

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