Schneier on Security: Security Flaws in Encrypted Police Radios
Jared Sperli stashed this in security
In a study we conducted over a two year period in several US metropolitan areas, we found that a significant fraction of the "encrypted" P25 tactical radio traffic sent by federal law enforcement surveillance operatives is actually sent in the clear, in spite of their users' belief that they are encrypted, and often reveals such sensitive data as the names of informants in criminal investigations."I'd call that a negative externality. Good thing no hostile powersoperate in our nation's capitol monitors and transcribe all of thisfor intelligence purposes and/or blackmail."