I imagine you already know, but for everyone else, the full comedy of the P25 system can be found in "Why (Special Agent) Johnny (Still) Can’t Encrypt"[1] by Cl

I imagine you already know, but for everyone else, the full comedy of the P25 system can be found in "Why (Special Agent) Johnny (Still) Can’t Encrypt"[1] by Clark, Goodspeed & others. Chapter 4 covers the DoS using a kid's wireless IM gadget Also: > "All users operated in the clear, but gave an indication that they believed they were operating in encrypted mode. In some cases, this involved one user explaining to another how to set the radio to encrypted mode, but actually described the procedure for setting it to clear mode." [1] https://www.usenix.org/legacy/event/sec11/tech/full_papers/Clark.pdf https://www.usenix.org/legacy/event/sec11/tech/full_papers/C...