Ants on earth, for instance, wander randomly but return to their colonies when they find food. But on the way back, they leave behind pheromone trails. If other ants find the trail, they follow it and reinforce it. The idea of the ant colony algorithm follows this pattern. The digital ants wander through computer networks. When an ant detects a threat, other ants converge on the scene, drawing the attention of human operators who step in to investigate.
"In nature, we know that ants defend themselves against threats very successfully," Wake Forest Professor of Computer Science Errin Fulp, an expert in security and computer networks, said in a press statement, adding: "They can ramp up their defence rapidly, and then resume routine behaviour quickly after an intruder has been stopped. We were trying to achieve that same framework in a computer system.â€