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Rayhunter: IMSI Catchers We Have Found So Far


A little over a year ago we released Rayhunter, our open source tool designed to detect cell-site simulators. We’ve been blown away by the level of community engagement on this project. It has been installed on thousands of devices (or so we estimate, we don’t actually know since Rayhunter doesn’t...

In short, Rayhunter is an open source Linux program that runs on a variety of mobile hotspots (dedicated devices that use a cellular connection to give you Wi-Fi). With governmentsaround the world engaging in constant attacks on user’s digital rights and access to the internet, removing glaring and potentially dangerous targets off of people’s backs when... In 2022 we’ve sharpened our knives and honed our skills in an effort to bring down the stalkerware industry, taken aim at invasive surveillance by police, raised red flags around the security and privacy...

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