Key notes
- DHS-led Operation Red Sunset is investigating the potential remote manipulation capabilities of Bitmain hardware deployed in the United States.
- A Senate report has identified worrying vulnerabilities in devices used near military bases and government installations.
- Bitmain denies security risks while facing scrutiny over tariff violations and broader concerns over Chinese tech influence.
Federal investigators have launched an in-depth review of Chinese manufacturer Bitmain Technologies, the world’s leading Bitcoin provider
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mining equipment. The investigation, known as Operation Red Sunset, is being led by the Department of Homeland Security and is examining whether Bitmain’s hardware could pose espionage or sabotage risks to U.S. critical infrastructure.
Operation Red Sunset: focus on espionage and network security
The investigation focuses on allegations that Bitmain’s mining machines could be manipulated remotely from China to enable surveillance or disrupt the U.S. power grid. Inspectors have examined chips and firmware from Bitmain devices seized at U.S. ports, and officials have examined their deployment near sensitive locations, including military bases and government-related facilities.
A Senate Intelligence Committee report released in July warned that Bitmain’s devices had “several concerning vulnerabilities” and could be controlled from China.
Political and industrial implications behind this
The survey covers both the Biden and early Trump administrations, reflecting bipartisan concerns about Chinese technological influence in the United States. Bitmain’s hardware has been deployed at several mining operations in the United States, including a facility backed by two of President Donald Trump’s sons, American Bitcoin Corp.
Bitmain has denied any security breaches, stating that its products do not allow remote access or manipulation. Gautier Lemyze-Young, a spokesperson for American Bitcoin Corp., also said the company conducts extensive security testing on hardware. The company believes that Bitmain devices “are deployed within modern industrial security standards and do not pose a credible risk to the U.S. power grid or national security,” according to a Bloomberg report.
Current broader regulatory context around China
The investigation coincides with broader U.S. efforts to assess the risks associated with Chinese technology in critical sectors. Authorities are also looking into potential violations of customs duties and import taxes related to Bitmain hardware.
No findings have been made public, and the Department of Homeland Security has declined to comment on the status of the investigation, saying only that the investigation is ongoing and active.
Additionally, the Trump administration is “cryptocurrency friendly,” but Bitcoin miners have faced many challenges in 2025. The tariff war between the US and China could mean over $100 million in tariff obligations for some US miners and as a result, Bitmain has even announced plans to build a factory in the US to circumvent the tariffs.
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José Rafael Peña Gholam is a cryptocurrency journalist and editor with 9 years of experience in the industry. He has written in leading media outlets like CriptoNoticias, BeInCrypto and CoinDesk. Specializing in Bitcoin, blockchain and Web3, he creates news, analysis and educational content for global audiences in Spanish and English.
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