There was a great disturbance in Valve recently as the Valve Anti-Cheat (VAC) system banned more than 40,000 Steam accounts on July 6, a day after the Steam Summer Sale ended.
Banned users can wait for big Steam sales to pick up cheaper versions of games they've been banned on for different accounts, but Valve apparently picked up on the trick as the company issued biggest single day ban in the platform's history. The last major ban wave was on October 12, 2016 when Valve issued 15,000 bans on a single day. You can check out the graph tracking the bans below, as provided by the Steam Database.
An additional 4,972 bans were issued to users thanks to in-game reports from players. Cheaters on Valve typically go after competitive Steam games like Dota 2 or Counter-Strike: Global Offense. As a result, players lost about $9,580 worth of total weapon skins as a result of these bans.
On a regular day, the VAC bans about 3,000 to 4,000 players, which is still quite a bit. CS: GO in particular has gained some notoriety for its skins marketplace, which has attracted some illicit market attention, including illegal gambling operations. This ban wave is separate from those gambling controversies, but highlights how valuable the CS:GO marketplace after the amount of real dollars lost as a result of the Steam bans.