New Steam bug could let someone take full control of a Windows PC
A newly revealed flaw in Steam on Windows could let someone with access to a computer gain full control of it without needing approval prompts or a Steam login. This matters most on shared or publicly accessible PCs where another person could misuse that access.
Who is at risk
Windows users with Steam installed are most at risk, especially if they share their computer with family, roommates, coworkers, or the public.
What to watch for
Watch for unexpected changes on a Windows PC with Steam installed, such as new accounts, altered settings, disabled security tools, or programs opening or installing without your action.
What to do
If you use Steam on Windows, limit access to your computer right away, avoid shared logins, and install any Steam or Windows updates as soon as they are available.