Flagged by Little Anti-Cheat, an anti-cheat used across many servers. Banned for cheating on Nemesis.surf (TF2 Bot Detector list), vorobey hackerpolice (TF2 Bot Detector list) and UGC-Gaming.net (TF2/CSS).
Each list published its own bans, and every reason is in its words. Mizan copies other lists' bans as published and enforces none of them; its own anti-cheat for Garry's Mod servers judges players separately. Think a ban is wrong?