This paper by Bellovin, Blaze, Diffie, Landau, Neumann, and Rexford will appear in a forthcoming issue of IEEE Security and Privacy.

A new US law allows warrantless wiretapping whenever one end of the communication is believed to be outside national borders. This creates serious security risks: danger of exploitation of the system by unauthorized users, danger of criminal misuse by trusted insiders, and danger of misuse by government agents.

Noteworthy first told you about this paper in October, when he recommended an early draft. It is a follow-up on Landau's op-ed in August of last year.

Risking Communications Security: Potential Hazards of the Protect America Act