Ants vs. worms: New computer security mimics nature

http://www.physorg.com/news173108776.html

In the never-ending battle to protect computer networks from intruders, security experts are deploying a new defense modeled after one of nature's hardiest creatures -- the ant.

Unlike traditional security devices, which are static, these "digital ants" wander through computer networks looking for threats, such as "computer worms" — self-replicating programs designed to steal information or facilitate unauthorized use of machines. When a digital ant detects a threat, it doesn't take long for an army of ants to converge at that location, drawing the attention of human operators who step in to investigate.