Chris Greer is a network analyst and Wireshark instructor for Packet Pioneer, a Wireshark University partner. He has focused much of his career at the transport layer, specifically TCP, specializing in how this core protocol works to deliver applications, services, and attacks between systems. Chris is a regular speaker at Sharkfest - the Wireshark Developer and User Conference. He has presented at DEFCON and other industry conferences and regularly posts Wireshark analysis tips to his YouTube channel.