- Signaling Vulnerabilities in Wiretapping Systems by Micah Sherr, Eric Cronin, Sandy Clark and Matt Blaze
- Security, Wiretapping, and the Internet by Susan Landau
Both concentrate on technical issues of wiretapping. The first concentrates on how to tap a physical line or switch, and ways to defeat those taps. The second describes why incorporating wiretap features into VoIP is a bad idea. Each article discusses relevant laws.