How Cell Towers Work

We’ve all driven past them so many times, but have you ever actually wondered how they work? How They Work Whether it’s handling simple phone calls or 12Mbps WiMax data, cell sites are organized with more or less the same flow: • A cellphone or modem radios the nearest towers, saying, basically, “I’m here!” When […]

IMSI Catchers

An IMSI-catcher (International Mobile Subscriber Identity) is a telephony eavesdropping device used for intercepting mobile phone traffic and tracking movement of mobile phone users. Essentially a “fake” mobile tower acting between the target mobile phone(s) and the service provider’s real towers, it is considered a man-in-the-middle (MITM) attack, and can be detected using tools like […]

IMSI Catchers: Practical Knowledge for Activists

Activists on the streets face a multitude of threats of State repression ranging from surveillance, arrest, and physical violence at minimum. Technology tools by themselves will not reduce this State power but tools used as part of asecurity culture can make an impact. There already exist a few excellent guides [0] on cell phones knowledge […]