DHS | Electronic Frontier Foundation

Deeplinks Blog by Lena Cohen, Hudson Hongo | March 5, 2026

The Government Uses Targeted Advertising to Track Your Location. Here's What We Need to Do.

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The online advertising industry has built a massive surveillance machine, and the government can co-opt it to spy on us.

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Deeplinks Blog by Beryl Lipton, Sarah Hamid | February 11, 2026

“Free” Surveillance Tech Still Comes at a High and Dangerous Cost

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Surveillance technology vendors, federal agencies, and wealthy private donors have long helped provide local law enforcement “free” access to surveillance equipment that bypasses local oversight. The result is predictable: serious accountability gaps and data pipelines to other entities, including Immigration and Customs Enforcement (ICE), that expose millions of...

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Deeplinks Blog by Saira Hussain, Sophia Cope | November 25, 2019

DEEP DIVE: EFF to DHS: Stop Mass Collection of Social Media Information

The Department of Homeland Security (DHS) recently released a proposed rule expanding the agency’s collection of social media information on key visa forms and immigration applications. Earlier this month, EFF joined over 40 civil society organizations that signed on to comments drafted by the Brennan Center for Justice....

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Deeplinks Blog by Shahid Buttar | October 18, 2016

U.N. Joins Critique of Proposed CBP Social Media Questions

Having for years enforced a constitutionally offensive border search regime at physical borders and U.S. international airports, Customs and Border Protection (CBP) recently proposed to expand its violations in troubling new ways by prompting travelers from countries on the State Department’s Visa Waiver Program list to provide their “social media...