zeek: zeek (The Zeek Network Security Monitor) zeek: zeek: Zeek (Bro) is an open source intrusion detection system (IDS). zeek: It is different from traditional IDS tools in that it is zeek: focused on network analysis. In other words, it is used zeek: to monitor traffic traversing a network to identify anomalies. zeek: zeek: zeek: https://www.zeek.org zeek: zeek: