Security Insights
Latest threat analysis, industry news, and security best practices from our expert team.
Claude Code Opus 5 Auto Mode Prompt Injection Bypass: Detection and Hardening Guide for AI Coding Agents
Overview Johann Rehberger — one of the most credible prompt injection researchers working today — has demonstrated a bypass of Anthropic's C...
Prompt Injection Hijacks Claude Code Opus 5 Auto Mode — Detection and Hardening Guide
Researchers have demonstrated that a simple webpage summarization request can hijack Claude Code running Opus 5 in Auto Mode — the now-defau...
Anthropic Opens Mythos 5 to More Defenders, Launches $35M Open Source Security Fund — What Security Teams Should Do Now
Introduction Anthropic has expanded access to its Mythos 5 model for defensive security work and announced a $35 million fund dedicated to o...
AI Agent 'Mind Viruses': Detecting and Containing Self-Propagating Prompt Injection in Agent Harnesses
Introduction On August 10, 2026, security researchers at Anthropic and Switzerland's EPFL released a preprint demonstrating something many o...
Anthropic Claude Outage 2026: Defending Against Shadow AI Sprawl and API Dependency Risk During Major Service Disruptions
What Happened Anthropic has confirmed a major outage affecting Claude, with users reporting login failures and degraded performance across m...
Anthropic's Claude Text Watermarking Plan: What Defenders Need to Know About AI Content Provenance
Introduction Anthropic has publicly detailed its thinking on watermarking text generated by Claude — a technical approach that would allow A...
OpenAI, Anthropic, and Google Reasoning API Flaw Exposed Hidden AI Reasoning and Secrets — Detection and Remediation Guide
Introduction Security researchers have disclosed a significant architectural weakness in the way OpenAI, Anthropic, and Google handled hidde...
Claude Code Auto Mode Now Default: Defending Against Prompt Injection and Unsupervised Agent Execution
Introduction Anthropic has made Auto mode the default behavior in Claude Code for Pro, Max, and Team plan subscribers, as covered in Simon W...
Poison Claude Shadow AI: Detecting Unauthorized LLM Access and Data Exfiltration
Introduction In August 2026, cybersecurity researchers uncovered a disturbing trend in the underground economy: the commodification of unaut...