This patch address a bug found in most verions of unity.
https://discussions.unity.com/t/unity-platform-protection-take-immediate-action-to-protect-your-games-and-apps/1688031
Patch for Unity bug
Source: Steam Community (opens in a new tab)
Build and release context
Steam update times within 24 hours of this post. Matching dates do not confirm which build it describes.
Build 20274350 · public branch
Steam updated · First observed