Valve is warning users to check for malware or reset their PC PirateFi was taken off Steam just days after it launched Other games are also being infected with malware Valve has started to contact suspected victims that they may have been the subject of a cyberattack just days after removing PirateFi from Steam after discovering it contained suspected malware files.

Valve removed a game from its Steam video game platform and store because it contained malware, according to media reports. In its notice to users who downloaded the game, Valve said affected users may want to “consider fully reformatting your operating system.”

Valve makes clear companies can still advertise in games. Those awkward billboards and real-world brand cosmetics are still fine to include, although Steam does stipulate that these must not be “disruptive” and that they be “appropriate within the context of the game.”