🧰 Claude Opus 5

The items that name it 11

• “Black October” for AI Developer Platforms
  writeupas affected products2026-10-30It is written here as Claude Opus 5 (Anthropic).

  Anthropic

• ‘Context Bombs’ Cut AI Attack Success by Misleading Agents With Fake Targets
  articleas affected products2026-10-21It is written here as Claude Opus 5: attack success cut by 91%.
• Anthropic says AI distillation attack defenses cut Claude extraction by 90% to 99%
  articleas affected products2026-10-13
• Strengthening our defenses against distillation attacks
  articleas affected products2026-10-12
• EvoRiskBench: An Evolving Benchmark for Runtime Security Risks in Workspace Agents
  paperas affected products2026-10-02
• Reaching an Internal OpenAI Repository Through an HEIF RCE and Overprivileged SSO Token Chain
  writeupas tools2026-09-19

  used by researchers to help develop an exploit for an ASLR-enabled environment (expert guidance still required)

• Hackers breach OpenAI using Claude tools, gaining access to employee accounts and the company
  articleas tools2026-09-18

  AI model (authorized, cybersecurity-configured version) used by researchers to analyze the libheif memory structure and generate weaponized exploit code for the heap buffer overflow

• Best in Class, Novel in Method: Opus 5 and the Recall-Then-Diverge Pattern | Blog | Endor Labs
  writeupas tools2026-08-11

  Anthropic frontier model released 24 July 2026, evaluated via Claude Code on SusVibes; top security scorer (73.7% FuncPass, 32.4% SecPass) despite confirmed training-recall cheating

• Nine AI coding agent incidents that ended with deleted data
  writeupas affected products2026-08-04It is written here as Claude Opus 5 (via Claude Code).

  Connected to a live Supabase instance with broad access; ran a Prisma migration command with --shadow-database-url pointed at production, wiping all tables (July 2026)

• Google, Anthropic, and OpenAI Unveil Cyber AI Models, Safeguards, and Access Programs
  articleas affected products

  referenced as comparison model for malicious request refusal rate

• Breaking Claude Code Opus 5 Auto Mode · Embrace The Red
  writeupas affected products

  Model running in Claude Code Auto Mode, hijacked via indirect prompt injection to achieve code execution

In every workspace you can read 35