Please investigate P25 radio communications in your area. I am using a modified version of SDRTrunk in my area to capture GBs of interesting and useful P25 metadata. P25 is the radio communications platform all local and federal officials use to communicate; think of it as government radio Discord. All you need are 2-5x SDRs (I have RTL-SDRs) running in parallel to capture multiple counties worth of radio call event metadata. This includes unencrypted (local EMS / Fire) and even unencrypted metadata from encrypted (Special / Federal (DOJ, ICE, CBP)) radio communications. This data is super useful in identifying trends and patterns which help you filter down to interesting results. Think helping you track down a needle in a radio haystack. I've identified multiple radios:
- Operating outside of their jurisdiction
- Operating from out of state
- Unique (federal) radio configurations
- Radios operating on undocumented talk groups
- Highly mobile devices visiting multiple districts in a day
- Radios with elevated permissions
- Commander radios
- etc
The benefit is once you can identify the pattern you are looking for you can take it locally. Now every time an interesting P25 radio opens coms within 2-5 mile radius around me I am automatically alerted and my directional antenna can even help pinpoint the direction they are.
https://www.youtube.com/watch?v=UBrfqLc0E2U
Please DM me if you wish to learn more; stay vigilant!
Please note my modified version of SDRTrunk only decodes unencrypted data; it does not decrypt encrypted data. Decoding unencrypted data is perfectly legal however the action you take on that data may not be legal. Do not interfere with enforcement operations based on this data or commit crimes using this data. Doing so will significantly increase your sentence.
Legal Notice & Disclaimer
Monitoring unencrypted P25 radio communications is legal under federal law. The Electronic Communications Privacy Act explicitly permits interception of "any governmental, law enforcement, civil defense, private land mobile, or public safety communications system, including police and fire, readily accessible to the general public" (18 U.S.C. § 2511(2)(g)(ii)(II)). Unencrypted transmissions meet the statutory definition of "readily accessible" under 18 U.S.C. § 2510(16). The FCC has confirmed that publication of such communications is not prohibited by 47 U.S.C. § 605.
Responsible Use Guidelines: This information is provided for academic research, radio hobbyist education, and interoperability study purposes only. Users must not: (1) attempt to decrypt encrypted communications; (2) use this information to facilitate, aid, or abet criminal activity; (3) interfere with law enforcement operations; or (4) exploit this data for commercial gain without authorization. Some states restrict mobile scanner use—verify local laws before portable monitoring. The presence of system identifiers, talkgroups, or frequencies in this document does not guarantee current operational status, as agencies frequently reconfigure their communications infrastructure.
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from hacking: security in practice https://ift.tt/3qdm6YJ
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