Embryogenesis

How sure can one be that he’s really Ovis Arie?

Okay, what I’m really asking this: The mods are often really really quick to ban someone for posting blatant spam or trolling or other shit. But how certain is it that the registered user actually posted that? Maybe their accounts got hacked, or their own machines got hacked and some spam-bot or someone got their username and password. And then you ban the guy. Are there ever protests or complaints (from banned users) that something like this happened?

(Should this question rather be in ATMB than here?)