What is Rayhunter?

Rayhunter works by intercepting, storing, and analyzing the control traffic (but not user traffic, such as web requests) between the mobile hotspot Rayhunter runs on and the cell tower to which it’s connected. Rayhunter analyzes the traffic in real-time and looks for suspicious events, which could include unusual requests like the base station (cell tower) trying to downgrade your connection to 2G which is vulnerable to further attacks, or the base station requesting your IMSI under suspicious circumstances.

Rayhunter notifies the user when something suspicious happens and makes it easy to access those logs for further review, allowing users to take appropriate action to protect themselves, such as turning off their phone and advising other people in the area to do the same. The user can also download the logs (in PCAP format) to send to an expert for further review.

Legal disclaimer: Use Rayhunter at your own risk. We believe running this program does not currently violate any laws or regulations in the United States. However, we are not responsible for civil or criminal liability resulting from the use of this software. If you are located outside of the US please consult with an attorney in your country to help you assess the legal risks of running this program

What is !Rayhunter@lemm.ee?

This is to easily keep track of when EFF’s Rayhunter has a new release on it's GitHub repository. This is done automatically by @bot@rss.ponder.cat so please ensure you have "Show Bots" enabled if your instance allows you to block bots. Also be sure you have not blocked rss.ponder.cat

This is not an official EFF community, only a Rayhunter release tracker.