Explore a critical security vulnerability affecting billions of Wi-Fi devices in this 35-minute Black Hat conference talk. Delve into the Kr00k weakness discovered in Broadcom/Cypress FullMAC Wi-Fi chipsets, which allows attackers to decrypt WPA2-protected network traffic. Learn about the potential impact, see a live demonstration, and understand how this flaw extends beyond just Amazon Echo devices. Gain insights into the technical details, implications for various chipsets, and the broader consequences for Wi-Fi security. Presented by Robert Lipovsky and Stefan Svorencik, this talk covers the discovery process, attack methodology, and concludes with important takeaways for cybersecurity professionals and device manufacturers.