Steam drops support for Windows 7 and 8.1 to boost security

Steam has officially ended support for Windows 7, 8, and 8.1 as of January 1, 2024, ceasing all client updates—including security fixes—on those platforms and recommending users upgrade to Windows 10 or 11. The report warns that outdated systems increase exposure to security threats like infostealers and supply chain attacks, notes Valve’s move to require SMS-based checks for developer updates, and advises stronger multi-factor authentication (e.g., security keys) to mitigate risks such as SIM swapping.