CrowdStrike agrees to buy AI agent observability firm Fiddler and AI red-teaming startup Dreadnode, and adds an 'AI Kill Switch' that stops and blocks rogue agents

official (CrowdStrike press releases, Nov 3). Deal values (about $400M and $95M) are from The Wall Street Journal as reported by SecurityWeek; CrowdStrike did not disclose terms2026-11-03

CrowdStrike agrees to buy AI agent observability firm Fiddler and AI red-teaming startup Dreadnode, and adds an 'AI Kill Switch' that stops and blocks rogue agents

Guardian also lists: agent-level hooks in Claude Code, OpenAI Codex, GitHub Copilot, Microsoft 365 Copilot, OpenCode and Cursor; discovery of malicious AI skills and MCP servers; and a Falcon sensor inside Anthropic's Claude Cowork VM.
Price: SecurityWeek, citing the WSJ, reports roughly $400M for Fiddler and $95M for Dreadnode, mostly cash.

This is the latest in a run of AI-agent security acquisitions; the feature claims above are vendor statements, not independent evaluations.

Sources: CrowdStrike: to acquire Fiddler for AI agent observability (Nov 3) · CrowdStrike: to acquire Dreadnode for automated AI security testing (Nov 3) · CrowdStrike: Delivers AI security and safety for the enterprise (AI Kill Switch, Nov 3) · SecurityWeek: CrowdStrike reportedly paying $495 million for Fiddler, Dreadnode