Experienced players can often spot a maphacker by reviewing replays. Common "telltale" signs include:
Many third-party "hack" programs are often carriers for malware or keyloggers, potentially compromising your personal data and computer security .
The StarCraft community is highly vigilant. Players often share replays of suspected hackers with prominent community figures or on forums like r/starcraft for public "analysis" and reporting. How to Detect a Maphacker
Modern anti-cheat systems, such as those used by Blizzard, can log a "fingerprint" of your hardware (CPU, GPU, and MAC addresses). If banned, simply creating a new account may not be enough to return to the ladder.
Immediate and perfect reactions to "surprise" maneuvers, such as a DT (Dark Templar) rush, when the hacker has no detection in place.
Units moving to intercept a hidden drop or army precisely, without any prior vision of the threat.