Any undetected CSS hacks?

Okay, I know they exist.. I was in a match earlier today and a kid got 5 head shots in a row with an awp in less than 3 seconds...

Where in the world are there UNDETECTED/WORKING/ hacks?

If they're not posted on the first page, they aren't here. Don't make a thread asking, "wheres the hacks" when you can figure it out yourself. If someone has a working hack and decides to post it u'll know.