Mathy Vanhoef is a researcher who focuses on the security of Wi-Fi and other important protocols, often discovering issues that impact all 9 billion plus devices using Wi-Fi. We discuss some of the serious security and privacy problems with the Wi-Fi standard, including ways Mathy has discovered to "break" Wi-Fi completely or gain an unfair advantage. We also go over WPA3, the new Wi-Fi standard set to replace WPA2, and the various ways it can already be attacked.