Steam Offline Mode Vulnerability Exposes User Login Activity

Steam Offline Mode Vulnerability Exposes User Login Activity

First seen 22 Jan 2026, 02:59 UTC News.YcombinatorIxbt.Games 25.9

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A vulnerability in Steam's 'Offline' mode allows others to see exact login timestamps of users. Security researcher xmrcat revealed that the backend continues to broadcast user activity, undermining privacy settings. This issue affects all Steam users who utilize the offline status feature.