Packet Hunter

You are watching a network log, one packet at a time. Mark what looks like an attack Suspicious (S) and what is routine Harmless (H). Click any earlier line to look at it again in the inspector. Twelve levels each teach one concept, from ports and DNS to port scans, brute force and beaconing, and Endless mode unlocks after the last one. All the traffic is made up. Your progress is saved locally.