How Agents Took Aim at Illegal SIM Farms

Keyboard with red scam alert key — Photo: hafizi / Shutterstock

A quiet three-week federal sweep just tore into the hidden tech farms behind millions of scam calls and texts hitting American families.

Story Snapshot

Homeland Security Investigations ran “Operation Signal Break” from June 22 to July 10 targeting illegal SIM farms across the country.
Agents seized tens of thousands of mobile phone SIM cards and dismantled command centers used to blast scam calls and phishing texts at Americans.
The Department of Homeland Security says these criminal SIM farms help steal about $15 million from U.S. consumers every year.
The crackdown fits President Trump’s broader push to hit transnational criminal networks that hide behind technology to fleece and intimidate Americans.

Federal Sweep Targets Hidden SIM Farms Behind Scam Wave

U.S. Immigration and Customs Enforcement Homeland Security Investigations ran a nationwide operation from June 22 to July 10 aimed at illegal SIM box “farms” that power mass scam calling and texting across the United States. The mission, called Operation Signal Break, focused on command-and-control hubs criminals use to route huge volumes of calls and messages over the internet while hiding their true location. Officials say the goal was simple: break the backbone of telecom fraud that keeps harassing and robbing ordinary Americans.

The Department of Homeland Security says these SIM farms are not small operations but industrial-scale fraud engines that help steal an estimated $15 million from Americans every year, based on data from the Federal Trade Commission. Short message service gateways known as SIM boxes can hold hundreds or thousands of mobile phone SIM cards each, letting criminals blast out fake bank alerts, package notices, and government messages that trick people into sharing personal and financial information. For many readers, those “your account is locked” texts now have a clear source.

How Operation Signal Break Worked on the Ground

Homeland Security Investigations and the Department of Homeland Security Cyber Crimes Center formed special “SIM Box Surge Teams” of agents, criminal analysts, and computer forensics experts, then deployed them to high-risk areas. Those teams hit sites in California, Florida, Texas, Massachusetts, New York, and New Jersey, with support from more than 11 field offices nationwide. According to officials quoted by Bloomberg Law, the government seized more than 30,000 mobile phone SIM cards from SIM farm locations over several weeks. Each seized card represents one less tool for crooks to target your phone.

Agents did more than grab hardware. Homeland Security Investigations Los Angeles, working with financial crime units, is now combing through seized SIM data and network records to map out victim lists, measure fraud losses, and trace money flows. Officials say they are focusing especially on links to Chinese transnational criminal organizations and their distribution networks. That focus lines up with President Trump’s broader stance that hostile foreign networks should not be allowed to use American infrastructure to scam citizens and move dirty money.

Broader Campaign Against Telecom Fraud and Foreign Networks

Operation Signal Break is part of a larger push against SIM farms that began in 2024, as Homeland Security Investigations zeroed in on these quiet but powerful scam engines. Since that campaign started, the agency reports executing more than 116 federal criminal search warrants tied to SIM farm operations, seizing over 500,000 SIM cards, more than 1,900 SIM boxes, and about $700,000 in criminal proceeds. Investigators say they have disrupted 68 SIM farms in 15 states used to send fraudulent texts and calls. For Americans sick of constant spam and fraud attempts, this is one front where the government is finally swinging hard.

The pattern fits a broader law-enforcement strategy: hit the infrastructure, then build cases. Agencies often first announce big totals—warrants served, devices seized, sites disrupted—while detailed court files and names come later. That approach can frustrate some readers who want to see more public proof, but it also reflects how fast-moving technology crime works. When criminals can rewire systems overnight, coordinated strikes across regions are needed to stop them from simply shifting their gear down the highway.

Wins for Consumers, But Ongoing Questions About Transparency

For conservative Americans, there is a clear upside here. Instead of chasing speech or pushing “woke” tech rules, the federal government is going after criminals who use networks to lie, steal, and bully U.S. families. Every seized SIM box and card makes it harder for fraudsters to pose as banks, power companies, or even government offices to shake down seniors and working parents. At the same time, many readers still want tighter oversight when powerful agencies deploy complex surveillance tools.

A five-state ICE @HSI_HQ and @DHSgov Cyber Crimes Center operation June 22-July 10 continued to decimate criminal “SIM farms” used to scam Americans out of about $15 million each year.

These “farms” house short message service gateways called “SIM boxes” that contain… pic.twitter.com/34bUa6ItGB

— U.S. Immigration and Customs Enforcement (@ICEgov) July 28, 2026

Previous watchdog reports have flagged improper use of cell-site simulators inside the Department of Homeland Security, including by Homeland Security Investigations and the United States Secret Service. Those findings do not directly challenge the facts of Operation Signal Break, but they do shape how the public views new enforcement pushes that rely on advanced data analysis. For now, the record on SIM farms is clear: the Trump administration’s law-enforcement teams have opened a new front against high-tech fraud. The next step is making sure this tough stance on crime stays rooted in the Constitution and respects the privacy of law-abiding Americans.