Valve is adding a new precaution after hackers modified some Steam games to contain malware. Though fewer than a hundred users had the games installed at the time, Valve will soon require SMS verification for all developers who wish to update their games.
GameDiscoverCo newsletter founder Simon Carless first reported the story on Twitter. Valve confirmed details in an email to PC Gamer. Valve wrote that all the affected Steam users were reached out to via email. Developer Benoît Freslon said on Twitter that his game, NanoWar: Cells VS Virus, was hit by the attack and that the malware stole his browser’s access tokens.
On a blog post, Valve confirmed the two-factor verification policy and shared details of its implementation. If developers want to update their build on Steam…