Cheaters? Engines?

How easy is it for a person to use rybka3 on their chess moves?  Very.  How do we detect such an atrocious scandal?  How many people are getting away with using chess engines?  Hard to determine.  I, for one, do not own a chess engine (I use chess.com's engine).  What can be done to catch cheaters?  Just a curious thought! 

I agree. Take away  the engine and put them face to face across a table.

I don't mind loosing to a player who cheats. The cheaters are fools. chess.com has some mechanism to check if a player is cheating. If you suspect anyone of cheating, you can report it to chess.com. 

Chess.com has caught a lot of them already and has suspended their accounts.