https://www.bleepingcomputer.com/news/microsoft/windows-10-quietly-got-a-built-in-network-sniffer-how-to-use/ > Microsoft has quietly added a built-in network packet sniffer to the Windows 10 October 2018 Update, and it has gone unnoticed since its release. > A packet sniffer, or network sniffer, is a program that monitors the network activity flowing over a computer down to an individual packet level.