Privacy & Technology

The Fourth Amendment protects us from unreasonable searches and seizures, but rapidly advancing technological capabilities and outdated laws have nevertheless left Americans’ private lives vulnerable to government intrusion.

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Privacy & Technology is part of ACLU of Colorado's Privacy & Liberty Project.

The Fourth Amendment protects us from unreasonable searches and seizures, but rapidly advancing technological capabilities and outdated laws have nevertheless left Americans’ private lives vulnerable to government intrusion.

We work to defend privacy as it relates to medical information, the internet and social media, consumer information, and more. Here in Colorado, we’ve filed suit to safeguard taxpayer privacy, challenged school officials’ search of students’ text messages, and investigated the disclosure of private phone records to the National Security Agency. We also revealed the existence of the Denver Police Department’s Spy Files ‐ the monitoring and recording of the peaceful protest activities of Denver-area residents, and the file-keeping on the expressive activities of law-abiding advocacy organizations. In 2013, we successfully advocated for legislation that protects Coloradans’ personal social media passwords and credit history from employers.

The Latest

Press Release
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Voting Rights Groups, Colorado Voters File Motion to Protect Voters’ Privacy

Lawsuit challenges DOJ demand for sensitive voter data
Press Release
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Community Leaders and Organizations Demand Transparency after Denver Mayor Mike Johnston Secretly Extends Flock Contract

The contract with Flock Safety was extended for five months with no public process or input from the mayor’s own Flock task force
Press Release
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Community Organizations and City Leaders Call for Denver Mayor Mike Johnston to Immediately Turn off Flock Cameras

Community Town Hall to Demand an End to Flock in Denver
Issue Areas: Privacy & Technology
Press Release
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Coalition of Civil Rights and Advocacy Organizations Deeply Opposed to Use of Flock Cameras for ICE Surveillance

Newly obtained audit logs show more than 1,400 searches were done on behalf of Immigration and Customs Enforcement (ICE) in Colorado
Court Case
Dec 23, 2025

United States of America v. Jena Griswold

The ACLU of Colorado moved to intervene on behalf of Common Cause and individual Colorado voters in a federal lawsuit over the federal government’s demand that Colorado turn over its entire voter registration rolls, including voters’ sensitive personal data.
Court Case
Jun 12, 2025

Ruby Johnson v. Gary Staab and Gregory Buschy of the Denver Police Department

We sued two Denver Police Officers for searching our client's home based on an illegal search warrant lacking probable cause.
Court Case
Aug 21, 2024

Armendariz and Chinook Center v. City of Colorado Springs, et al.

This case concerns the Colorado Springs Police Department’s use of unconstitutional warrants to comb through activists’ digital data in retaliation for their political speech and association.
Court Case
Jun 10, 2017

Longmont public housing tenants subjected to illegal K-9 searches of their homes