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EFF Cat Speaking Freely

EFF to Ninth Circuit: Social Media Content Moderation is Not "State Action"

Former EFF intern Shashank Sirivolu contributed to this blog post. Social media users who have sued companies for deleting, demonetizing, and otherwise moderating their content have tried several arguments that this violates their constitutional rights. Courts have consistently ruled against them because social media platforms themselves have the First Amendment...

Arizona Law Tramples People’s Constitutional Right to Record Police

SAN FRANCISCO–A new Arizona law that bans people from recording videos within eight feet of police violates the constitutional rights of legal observers, grassroots activists, and other Arizonans, says a brief filed Friday in federal court by the Electronic Frontier Foundation (EFF), two Arizona chapters of the National Lawyers...

Honoring Peter Eckersley, Who Made the Internet a Safer Place for Everyone

With deep sadness, EFF mourns the loss of our friend, the technologist, activist, and cybersecurity expert Peter Eckersley. Peter worked at EFF for a dozen years and was EFF’s Chief Computer Scientist for many of those. Peter was a tremendous force in making the internet a safer place. He was...

Hollywood’s Insistence on New Draconian Copyright Rules Is Not About Protecting Artists

Stop us if you’ve heard these: piracy is driving artists out of business. The reason they are starving is because no one pays for things, just illegally downloads them. You wouldn’t steal a car. These arguments are old and being dragged back out to get support for rules...

An animated image showing location pins dropping onto a street map from above, tracing several paths

What is Fog Data Science? Why is the Surveillance Company so Dangerous?

An EFF investigation of public records acquired from dozens of state and local law enforcement agencies has uncovered a widely-used mass surveillance technology. Americans are accustomed to hearing about how the National Security Agency (NSA), the Central Intelligence Agency (CIA), and even the domestically-focused Federal Bureau of Investigation (FBI) have...

Fog Data Science Puts our Fourth Amendment Rights up for Sale

The data broker selling people’s location data to any local, state, and federal agency willing to buy it is putting our Fourth Amendment rights at risk. EFF recently published its investigation into Fog Data Science, which claims in marketing materials sent to law enforcement that it has billions of location...

How Law Enforcement Around the Country Buys Cell Phone Location Data Wholesale

In Chino, CA, police used Fog Data Science’s geolocation service to do massive sweeps revealing who was near minor theft and burglary scenes. In a rural Missouri murder investigation, Fog’s service was used to track a babysitter who was never a suspect. In Greensboro, NC, a crime analysis supervisor raised...
An animated image showing location pins dropping onto a street map from above, tracing several paths

Inside Fog Data Science, the Secretive Company Selling Mass Surveillance to Local Police

A data broker has been selling raw location data about individual people to federal, state, and local law enforcement agencies, EFF has learned. This personal data isn’t gathered from cell phone towers or tech giants like Google — it’s obtained by the broker via thousands of different apps on Android...

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