Radio system failure left Spokane County fire, police without communication for three hours.Digital radio problems for Cincinnati police and fire.Citron Exposes the Vulnerability of Motorola Solutions.Despite Spending $100 Million, County Hasn’t Audited Motorola Radio Costs in 15 Years.Central Oregon Police: Faulty new digital radio system risks lives.‘Throttling’ Caused Broward Radio Failures During Parkland Shooting.

Radio Silence: Sunnyvale Police Officers Were Unable to Communicate With Dispatch.Glitches Plaguing New Roseville (CA) Police Communications System.Failure to communicate: P25 radio breakdowns worry first responders.Puget Sound Emergency Radio Network in trouble.With this solution in place, the researchers were able to do detailed analysis of the traffic coming from various radio systems and to transmit and receive to P25 radios in their lab. The research is part of the OP25 project, which uses GNUradio to implement a P25 stack using software defined radio. Also detailed is a Denial of Service (DoS) attack that makes use of unauthenticated radio inhibit mechanism. The paper details flaws in the DES-OFB and ADP encryption that enable the encryption key to be recovered by traditional brute force key searching. Two Australian Security researchers, Stephen Glass and Matt Robert have published a paper that details flaws in the encryption implementation (PDF) in the APCO Project 25 digital radio standard, used by emergency services and police departments world-wide. The problems will be corrected only after we recognize they exist. I believe the benefit of making public safety officials aware of the extremely serious nature of this problem outweighs the risk of publication on my Blog. The following information is available from numerous sources other than this website. I’ve considered the merits of posting this information in view of its potentially sensitive content.

How to decrypt apco 25 encryption code