The Intrusion Countermeasure System, or "ICS" for short, is a motion detector. While active, it uses seismic vibrations to sense cloaked enemies in its range, 'pinging' their position with visual red circles and alerting the player with an audio notification. This does NOT reveal cloaked units or make them targetable; the ICS' owner or their allies must manually attack ground or move units to find the hidden enemies.

It does not penetrate radar jamming or show any radar dots.

The ICS is perfect for protecting bases against sneaky Gremlins, Spy Bots, or the general use of cloaked units on the frontline. However, it can only ping enemies that are moving, so it cannot detect minefields or stationary cloaked units.

Unlike radar, the ICS' detection radius is not stopped by terrain.