The Electronic Frontier Foundation, an advocacy group, submitted an amicus brief with the ACLU, calling stingrays "the biggest technological threat to cellphone privacy that you don't know about".
EFF is leading the fight against the NSA's illegal mass surveillance program. Learn more about what the program is, how it works, and what you can do.
Digital rights supporters take to the streets of Medellín, Colombia with new friends at @BSides_CO. #EFFintheWild https://eff.org/powerup
This digital rights supporter ventures through the Kingdom of Bhutan. #EFFintheWild https://eff.org/powerup
We spotted this hacked EFF 25th Anniversary t-shirt—bedazzled and embedded with LEDs—at @BSidesLV. #EFFintheWild https://eff.org/powerup