Anthropic signs out some Claude users, removes saved payment methods, and issues refunds after infostealer malware on user PCs hijacked sessions to drain usage (Mayank Parmar/BleepingComputer)

Anthropic has taken action after infostealer malware on user PCs hijacked Claude login sessions to drain usage. The company is signing out affected Claude users, removing saved payment methods, and issuing refunds. This response comes as Anthropic warns users about the malware's ability to steal active Claude login sessions, highlighting a security concern for those utilizing the platform.