Explore the common root cause behind recent cell network attacks affecting mobile user privacy in this 20-minute conference talk from USENIX Enigma 2020. Delve into the vulnerability stemming from cell phones' inability to authenticate towers during initial connection bootstrapping. Examine various attack types, from traditional IMSI catchers to newer spoofing techniques targeting emergency broadcast systems. Understand the historical context, current efforts to address the issue, and the inherent challenges in solving this pervasive problem. Gain insights into cell network security research and its future directions.