Cyber Risks · GreyNoise Blog

Threat Actors Are Posing as OpenAI, Anthropic and Deep Seek to Target Credentials and Secrets

Summary: GreyNoise observed automated scanners forging the crawler names of OpenAI, Anthropic, DeepSeek and Fortune 500 companies while requesting .env files, cloud access keys, private keys and password stores. A cluster impersonating 13 AI crawlers from eight companies sent six names from the same 824 addresses in near-identical volume, never once requesting /robots.txt, and all 263,849 sessions carrying the Google-Extended string were forged because Google documents no such user agent.

What's compelling: Not one of the 824 addresses matched any published crawler range from the four companies, and they sit across 795 separate /24 networks, so there is no single network to block and the user agent label cannot separate them from Anthropic's real crawler, which sent the identical ClaudeBot string.

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Topics
Threat Actors & Nation-State
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