Malware has stolen Claude logins, and Anthropic has cleaned up

Examples have been found of ordinary infostealer malware, meaning malicious software that grabs login information from your computer, being used to steal access to Claude accounts.

The attackers did not hack Claude itself. Instead, they grabbed an active login session from the user's own computer and used it to exploit the victims' accounts and usage.

Anthropic has responded by forcing affected users to log out, removing saved payment cards from the accounts and refunding the charges incurred through the abuse.

For you, this means: this is not a flaw in Claude, but yet another example that ordinary computer security matters, also when using AI services.

If you have recently downloaded something suspicious, share a computer with others, or see unexpected charges on your Claude account, check it now: change your password and log out everywhere.

Otherwise, you can relax. There is nothing to fix in Claude itself; it is about keeping your own machine clean, as you should regardless of which service you use.