Anthropic is notifying Claude users about infostealer malware exploiting active login sessions, enabling attackers to access accounts and misuse usage limits.
Hackers are stealing active login sessions
Aug 31, 2026
10:53 am
What's the storyAnthropic, the company behind the AI service Claude, has issued a warning to users about a recent security breach.
The firm revealed that hackers have been stealing active login sessions through infostealer malware.
Anthropic is warning some Claude users that infostealer malware on their PCs has stolen active Claude login sessions, allowing…
Anthropic warns Claude users that infostealer malware stole session cookies, letting hackers hijack accounts and drain paid usage…
Anthropic is warning Claude AI users about infostealer malware infections that enable attackers to run up victims’ usage limits.
A threat actor used a variety of infostealers to collect session information and access Claude accounts belonging to an unknown…
A report from the makers of Claude said the AI tool had been used to commit cyber-attacks and fraud.
Commodity malware steals authenticated sessions, letting thieves freeload on victims' paid usage
