Some sort of breach or malfunction has hit Steam, the world’s largest PC gaming platform, that is allowing people access to other people’s user accounts. Not just allowing, rather, but forcing users into accounts that aren’t theirs.

That means not only access to other people’s game libraries, but more seriously, potentially harmful information like home addresses, purchase history and even credit card information.

Twitter is exploding with reports of this glitch, and the exact details are still being sorted out. Some users are getting a Russian or French or Spanish landing page instead of English. Some are reporting that they’re being logged into only one of a few different accounts whenever they try to sign in, or even simply refreshing the account page or going to a different section of the client.

It’s tough to know what to do in a situation like this, but the safest thing may be not to do anything at all. It’s unclear what exactly is going on, so staying logged out entirely is probably a good idea. With that said, others are trying to reach their own account in order to delete their payment information from Steam so in case their account is exposed, they’re safe from potential thievery. The prevailing advice at this point, however, is simply avoid trying to log in or change anything at all until we know more.