CS:S Anti-flash exploit revealed
This is a demo taken of what it looks like to use a fairly infamous anti-flash exploit that currently exists in CS:S. It was first made public after cevo-p teams accused each other of using it the last two seasons, but many people still don't know about it. The first part of the demo is taken all from the same clip, it pauses and looks like it changes because that is what the exploit looks like when it is used. For some reason, this exploit DOES NOT work on LAN servers, so you have to actually join an internet server to see it in action. If you try and create a local game with the "create server" tab in CS:S, the exploit WILL NOT WORK.
As of 2008, this exploit currently still works, is still undetectable, and is still not blocked by zblock. The only way to know somebody has used it is to look for the error messages it will generate in the console while reviewing a demo for cheating.