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Deeplinks Blog by Cooper Quintin | January 8, 2026

How Hackers Are Fighting Back Against ICE

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A few enterprising hackers have started projects to do counter surveillance against ICE, and hopefully protect their communities through clever use of technology.

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Deeplinks Blog by Cooper Quintin | January 7, 2026

ICE Is Going on a Surveillance Shopping Spree

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We need to have a hard look at the surveillance industry. It is a key enabler of vast and untold violations of human rights and civil liberties, and it continues to be used by aspiring autocrats to threaten our very democracy. As long as it exists, the surveillance industry, and...

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Deeplinks Blog by Cooper Quintin | September 10, 2025

Rayhunter: What We Have Found So Far

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Rayhunter is a program that runs on a variety of mobile hotspots and watches for cell-site simulators—a tool police use to locate or identify people's cell phones, also known as IMSI catchers or Stingrays. This project is a testament to the power and impact of open source and community driven...

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Deeplinks Blog by Cooper Quintin | September 3, 2025

EFF Statement on ICE Use of Paragon Solutions Malware

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This statement can be attributed to EFF Senior Staff Technologist Cooper QuintinIt was recently reported by Jack Poulson on Substack that ICE has reactivated its 2 million dollar contract with Paragon Solutions, a cyber-mercenary and spyware manufacturer. The reactivation of the contract between the Department of Homeland Security...

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Deeplinks Blog by Bill Budington | July 16, 2025

Radio Hobbyists, Rejoice! Good News for LoRa & Mesh

A set of radio devices and technologies are opening the doorway to new and revolutionary forms of communication. These have the potential to break down the over-reliance on traditional network hierarchies, and present collaborative alternatives where resistance to censorship, control and surveillance are baked into the network topography itself.

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Deeplinks Blog by Cooper Quintin, Will Greenberg | March 4, 2025

Meet Rayhunter: A New Open Source Tool from EFF to Detect Cellular Spying

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Rayhunter is a new open source tool we’ve created that runs off an affordable mobile hotspot that we hope empowers everyone, regardless of technical skill, to help search out cell-site simulators (CSS) around the world.

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Deeplinks Blog by Cooper Quintin | February 18, 2025

Crimson Memo: Analyzing the Privacy Impact of Xiaohongshu AKA Red Note

Early in January 2025 it seemed like TikTok was on the verge of being banned by the U.S. government. In reaction to this imminent ban, several million people in the United States signed up for a different China-based social network known in the U.S. as RedNote, and in China...

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Deeplinks Blog by Bill Budington | November 8, 2024

Creators of This Police Location Tracking Tool Aren't Vetting Buyers. Here's How To Protect Yourself

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Now more than ever, attorneys general in states hostile to reproductive choice will be emboldened to use every tool at their disposal to incriminate those exerting their bodily autonomy. Locate X is a powerful tool they can use to do this. So here are some timely tips to help protect...

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Deeplinks Blog by Cooper Quintin | September 27, 2024

New Email Scam Includes Pictures of Your House. Don’t Fall For It.

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You may have arrived at this post because you received an email with an attached PDF from a purported hacker who is demanding payment or else they will send compromising information—such as pictures sexual in nature—to all your friends and family. You’re searching for what to do in this frightening...

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Deeplinks Blog by Bill Budington, Alexis Hancock | March 28, 2024

Restricting Flipper is a Zero Accountability Approach to Security: Canadian Government Response to Car Hacking

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On February 8, François-Philippe Champagne, the Canadian Minister of Innovation, Science and Industry, announced Canada would ban devices used in keyless car theft. The only device mentioned by name was the Flipper Zero—the multitool device that can be used to test, explore, and debug different wireless...

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