Intrusion Countermeasures Electronics

Intrusion Countermeasures Electronics, commonly abbreviated to ICE, is a type of Net security in the Cyberpunk universe.

Overview
ICE is a security software or program that protects individuals or infrastructures from being breached. It is considered the most complex Net security, used by many types of netrunners.

Notable ICEs

 * Blackwall - An ICE designed by NetWatch that guards against rogue AIs.
 * Self-ICE - A frontal cortex implant in Cyberpunk 2077.

Trivia

 * Intrusion Countermeasures Electronics was first popularized by William Gibson in several of his novels and short stories. However, the term originates from Tom Maddox, who let Gibson use it after reading the term in an unpublished manuscript.