Explore the intricacies of HDMI security in this 43-minute conference talk from WEareTROOPERS. Dive into the world of HDMI, CEC (Consumer Electronics Control), and ARC (Audio Return Channel) protocols. Learn about the HDMI-CEC communication channels, data transmission methods, and potential vulnerabilities. Discover how to use CEC adapters for testing and fuzzing HDMI devices. Gain insights into sending E-EDID data, constructing CEC message frames, and understanding logical addressing. Examine the Ubuntu ODC fuzzer and its applications in identifying security weaknesses. Conclude with a comprehensive summary of HDMI security testing techniques and best practices for reporting vulnerabilities.