EFF @EFF
Cell-Site Simulators (CSSs, a.k.a. Stingrays or IMSI-catchers) are increasingly being used by law enforcement for both dragnet and targeted surveillance, but how do they actually work? Read the whitepaper by EFF Technology Fellow @yomnapple to learn https://t.co/3S4wVE2DiJ — PolitiTweet.org