https://www.pcgamer.com/pubgs-latest-anti-cheat-update-is-banning-players-at-random-fix-on-the-way/

PlayerUnknown's Battlegrounds' hacker problem is well documented, and developer Bluehole is constantly pushing updates to the game's anti-cheat system in order to catch the worst offenders. Unfortunately, the latest update has resulted in some friendly fire, with scores of players claiming they've been banned without ever having cheated. The developer has confirmed that the update is "temporarily preventing some players from accessing our game".

Numerous Twitter users on this thread uploaded screenshots of a ban message, which said they were banned because of "abnormal game logs" and "too many suspected complaints for using illegal software".