Bitmain Technologies Ltd., the Chinese manufacturer that supplies most of the world’s Bitcoin-mining machines, has been the subject of a months-long federal investigation into whether its products pose risks to U.S. national security and critical infrastructure. The previously undisclosed inquiry, dubbed Operation Red Sunset and led by agents from the Department of Homeland Security (DHS), sought to determine whether Bitmain’s machines could be remotely controlled for espionage or used to sabotage the American power grid.
According to a Bloomberg report citing anonymous sources, the investigation also examined potential tariff and import tax violations. DHS spokesperson Mike Alvarez declined to comment, saying only: “The Department of Homeland Security does not comment on open and active investigations.”
The probe drew fresh scrutiny due to Bitmain’s high-profile business dealings, including a contract to sell 16,000 miners to American Bitcoin Corp., a venture backed by President Donald Trump’s sons, Eric and Donald Trump Jr.
Concerns about the security risks posed by Bitmain’s equipment have reportedly circulated in Washington for years. In July, a Senate Intelligence Committee report warned that the company’s devices present “several disturbing vulnerabilities” to the United States, noting that facilities using them were often built near critical sites and that the machines “have the capability to be remotely controlled by Bitmain personnel in China.”
This followed an earlier federal review that found the use of Bitmain’s machines near a U.S. military base raised “significant national security concerns.” In May 2024, then-President Joe Biden blocked a Chinese-owned crypto mining facility operating thousands of Bitcoin machines near a strategic Air Force base in Wyoming, after a committee concluded the proximity and foreign-sourced equipment posed a “significant national security risk.”
The Trump family’s connection to the business has raised conflict-of-interest concerns, particularly as President Trump has pledged to make America the “crypto capital of the world.”
“These conflicts of interest could be a great danger to our economy and to our national security,” said Richard Painter, a professor at the University of Minnesota Law School and former White House chief ethics counsel.
The White House denied any impropriety, with press secretary Karoline Leavitt dismissing claims that the president and his family were engaged in conflicts of interest.
Bitmain strongly rejected the allegations, stating it was unaware of Operation Red Sunset. The company said it is “unequivocally false” to claim its machines can be remotely controlled from China, adding that it “strictly complies with U.S. and applicable laws and regulations and has never engaged in activities that pose risks to U.S. national security.”
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American Bitcoin Corp. also defended its choice of hardware. Spokesperson Gautier Lemyze-Young said the company “takes national security, grid stability and operational security extremely seriously” and conducts extensive security tests that have found no remote access vulnerabilities.
As per Bloomberg, the status of Operation Red Sunset remains unclear. A senior administration official said: “The U.S. government is concerned about threats of this nature and is constantly and vigilantly monitoring them.”
- What is Operation Red Sunset? A DHS probe into whether Bitmain’s mining machines pose U.S. national security risks.
- Why is Washington concerned? Reports warn that the devices could be remotely controlled and are often near critical sites.
- What role does the Trump family play? Bitmain signed a deal to sell 16,000 miners to a venture backed by Trump’s sons.
- How has Bitmain responded? The company denies all allegations, insisting its machines comply with U.S. laws and standards.
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