CrowdStrike buys Fiddler AI and Dreadnode for about $500M combined

CrowdStrike is picking up two companies that extend its security platform deeper into AI oversight: Fiddler AI, whose software gives enterprises visibility into what their AI agents are doing, and Dreadnode, whose automated testing hunts for weaknesses in AI models, apps, and agents ahead of launch. Per The Wall Street Journal, the price tags run to roughly $400 million for the former and close to $95 million for the latter.

The deals land as cybersecurity teams struggle to keep pace with how fast AI has spread inside their organizations — employees are automating workflows, building apps with AI assistance, and deploying fleets of agents, often faster than security policy can adapt. CrowdStrike, already widely used across enterprises and governments, is leaning on that scale to grab a piece of this fast-growing niche; it isn’t alone, as other startups and vendors have raised sizable rounds on the premise that existing security tools can’t adequately monitor or control AI usage. The company has been building its own detection and response layer for AI activity, called Falcon Guardian, and these acquisitions add to that push: Fiddler AI will become part of the Falcon platform as Falcon Observe, helping customers evaluate agents before launch, track their behavior, and feed that data back into the broader platform as telemetry, while Dreadnode folds into Falcon Guardian, feeding its security-testing results in as policy recommendations.

PitchBook data puts Fiddler AI’s total funding since its 2018 founding at roughly $99 million; Dreadnode, started in 2023, has brought in $14 million to date.

Why it matters

The purchases show established cybersecurity vendors racing to own AI-agent monitoring and testing before specialized startups can build independent scale in the category.