Explore the persistent security vulnerabilities plaguing mobile network infrastructure in this 46-minute conference talk that examines how legacy bugs continue to haunt modern telecommunications systems. Discover the technical challenges behind identifying and eliminating long-standing security flaws in mobile networks, understand why certain vulnerabilities persist across network generations, and learn about the implications for mobile security. Gain insights into the research methodologies used to uncover these "ghost" vulnerabilities, examine case studies of notable mobile network bugs that have survived multiple technology transitions, and understand the complex ecosystem factors that prevent timely patching and remediation of critical security issues in telecommunications infrastructure.