The talk at the FOSDEM conference in 2023 focused on Suricata, an open-source network security monitoring engine. The speaker discussed the evolution of Suricata and the challenges faced in monitoring network traffic. Suricata is a high-performance engine that provides situational awareness and can be used as an intrusion detection system or a network security monitoring tool. The speaker emphasized the importance of the network in observing and protecting against security threats, as everything happens on the network. Features of Suricata include identification and extraction of files, support for various protocols, and the ability to store and analyze captured packets. The speaker also highlighted the challenges faced in terms of keeping up with network speeds, handling encryption, and ensuring performance and security. The talk encouraged community involvement and contributions to Suricata's development. The presentation concluded with a summary of the importance of community collaboration in improving and advancing Suricata.