Explore the vulnerabilities of radio timing services and their impact on NTP servers in this Hack In The Box Security Conference presentation. Delve into the process of forging wireless time signals using low-cost circuits and learn how hackers can disrupt consumer electronic products and industrial NTP servers. Examine the encoding and modulation techniques for various timing signals, including WWVB, JJY, and DCF77. Discover the potential for GPS signal spoofing and its effects on NTP receivers. Gain insights from security researchers Yuwei Zheng and Haoqi Shan as they demonstrate practical attacks on time synchronization systems and discuss the implications for both consumer devices and critical infrastructure.