Last updated 14 July 2026 · reviewed for accuracy

Reading packet captures

The graduation exercise of the analysis track: you get a capture file and a user complaint (“the app is slow,” “login fails sometimes”) and nothing else. The lesson builds the diagnostic habit: establish the timeline, find the handshake, spot the retransmissions or the reset, and name the guilty layer.

Three real-world scenarios included, ordered from “spot it in a minute” to “genuinely cruel.”