[pcmaster]

For the past few weeks, I have been seeing an increase of cheaters who cannot be banned/targeted by usual means (e.g. through SourceBans), as they are simply not authenticated through Steam yet.
After about 1-2 minutes, they will automatically be kicked with the reason "Client not connected to Steam", but can still cause ruckus until that happens (e.g. aimbotting).

The only way to get rid from them is to use the engine's built in "banid" commands, although they still manage to reconnect just like nothing happened.

Has anyone else seen this on their server and maybe got a solution on how to deal with those shitbags?
Only effective workaround I have atm is to simply disallow unauthorized clients to do any damage and send any chat messages.