SecurityWeek - Anthropic warns Claude users of infostealer infections

Evidence record

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Claim-level citations (6)

• supportsInfostealer malware stole active Claude sessions from users: SecurityWeek reports that Anthropic notified users whose active Claude sessions had been stolen by infostealer malware.

  SRC-SECURITYWEEK-CLAUDE-STEALER

• supportsInfostealer malware stole active Claude sessions from users: Attackers used stolen active sessions to access Claude accounts and consume victims' usage limits.

  SRC-SECURITYWEEK-CLAUDE-STEALER

• supportsInfostealer malware stole active Claude sessions from users: Anthropic linked affected Windows devices to infostealers including Vidar, Lumma, StealC, RedLine and Acreed, and a smaller number of macOS devices to Atomic Stealer.

  SRC-SECURITYWEEK-CLAUDE-STEALER

• supportsInfostealer malware stole active Claude sessions from users: The reported compromise originated from malware on customer endpoints rather than a breach of Anthropic's own systems.

  SRC-SECURITYWEEK-CLAUDE-STEALER

• supportsInfostealer malware stole active Claude sessions from users: Anthropic signed out compromised sessions and removed saved payment methods from affected accounts as a precaution.

  SRC-SECURITYWEEK-CLAUDE-STEALER

• supportsInfostealer malware stole active Claude sessions from users: The reporting does not describe a breach of Anthropic's service; the initial compromise was malware on user systems.

  SRC-SECURITYWEEK-CLAUDE-STEALER