well YES!! i do believe i have played against my first map hacker!!was on a 7 game winning streak, reach third in my silver league and feeling goodrun up on a zerg, which is usually no scene for me.Then i get stomped all over, and i take my loss and say well wow, lemme learn how this zerg man do this, now watching the replay, i go wait.... something odd here.Man never scout, not once, but knew where my base was with his horde of lingsthen the really damning part, was, i had a probe and a pylon in a corner behind them fog spots farrr away from his base, the man makes a beeline, straight from his base, with out ever scouting, way to the back of this other base in the fog and kills my pylon and probe, then run to intercept another probe in another part of map he has no vision of, never scouted, has no units waiting... Rewatched it a couple times to confirm this HAS to be a map hack.
you hadda watch the replay and follow the guys camera whiles leaving his fog off.. if you see him lookin in black portions of the map... you definitely know something is up