CrowdStrike to buy AI agent security startups Fiddler and Dreadnode
The deals bring agent monitoring and offensive AI testing into CrowdStrike's Falcon products, which will gain a kill switch for misbehaving agents.
CrowdStrike has agreed to buy two AI-focused security startups, Fiddler AI and Dreadnode, which The Wall Street Journal reports total roughly $495 million, though CrowdStrike itself has not disclosed prices. Fiddler, a Palo Alto firm founded in 2018 that monitors AI agents and explains their decisions, is reportedly priced near $400 million, while Dreadnode, a 2023 startup building offensive AI testing tools, is reportedly about $95 million. Most of the payment is in cash, with some stock subject to vesting, and both deals are expected to close by January 31, 2027. CrowdStrike plans to sell Fiddler's technology as Falcon Observe and to fold Dreadnode's red-teaming, which runs more than 100 known attack methods, into its Falcon Guardian product. The company also unveiled an AI Kill Switch in Falcon Guardian that lets administrators halt a misbehaving agent, stop it from restarting and cut its network access.
Why it matters
The purchases signal that security vendors see controlling AI agents as a distinct product category, not an add-on to existing tools. For companies running AI agents, the practical change is that administrators will be able to monitor agent decisions, halt an agent, stop it from restarting and cut its network access from within CrowdStrike's platform. Most of the price is reported in cash, and the deals are expected to close by January 31, 2027, so the effect on customers will depend on how these tools are packaged once the transactions are complete.
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