Wouldn't say every script is detected, but it surely is easy detectable, so in a way, yes.
So, all the rapid fire/rapid knife, etc. scripts are getting detected.
I received a ban 6 months ago, because I used a rapid fire script in zombie mode (it didn't work correctly though)
Someone asked in steam forums if scripts can be vac/tac bannable so i said yes and told him my story but another user doesn't believe me.
I ask you now: Is AutoHotkey and AutoIT detected?
Wouldn't say every script is detected, but it surely is easy detectable, so in a way, yes.