EFF @EFF
Cell-Site Simulators (CSSs, a.k.a. Stingrays or IMSI-catchers) are in the news, and are increasingly being used for surveillance by—and of—the U.S. government. Wonder how they work? Here's EFF's report, with research by @rival_elf https://t.co/lq7lzIwI1e — PolitiTweet.org