Bitmain Applied sciences Ltd., the Chinese language producer behind many of the world’s Bitcoin mining machines, has been the main target of a federal investigation assessing whether or not its merchandise pose nationwide safety dangers, in keeping with Bloomberg reporting. 

The inquiry, dubbed “Operation Purple Sundown,” led by the Division of Homeland Safety, reportedly examined whether or not the corporate’s machines could possibly be remotely manipulated for espionage or sabotage of essential US infrastructure. 

Bitmain denies these capabilities, however investigators have reportedly examined its tools at ports and dissected chips and code to evaluate potential threats.

The corporate’s {hardware} has lengthy attracted scrutiny. 

A 2017 Bitcoin Journal report recommended Antminer gadgets contained code permitting distant shutdown, which Bitmain mentioned was a theft-prevention function later patched. Related issues resurfaced in 2019.

In Could 2024, then-President Joe Biden blocked a crypto mining facility close to a Wyoming nuclear missile base, citing nationwide safety dangers linked to foreign-sourced mining tools. The Committee on International Funding in america (CFIUS) mentioned the presence of overseas mining gadgets close to delicate services might facilitate surveillance and espionage.

Bitmain has repeatedly said it complies with US legislation and has no ties to the Chinese language authorities. It additionally denied consciousness of “Operation Purple Sundown” or any import-related investigations.

The Commerce Division blacklisted Bitmain’s AI affiliate, Sophgo Applied sciences, in January 2025 over alleged dealings with Huawei, additional elevating issues concerning the firm’s ties to Beijing.

Bitmain ties with the Trump household

The investigation intersects with the Trump household’s crypto ventures. Eric and Donald Trump Jr. invested in American Bitcoin, an organization that lately acquired 16,000 Bitmain gadgets for $314 million, paid in Bitcoin, per Bloomberg.

The startup plans to function 76,000 mining machines throughout the US and Canada. American Bitcoin insists its operations comply with strict safety requirements and that Bitmain {hardware} poses no credible threat to the US energy grid or nationwide safety.

The difficulty has drawn bipartisan consideration. A July 2025 Senate Intelligence Committee report highlighted “disturbing vulnerabilities” in Bitmain gadgets and warned that services utilizing them close to energy crops or army installations current “an unacceptable threat.” 

GOP Consultant Zach Nunn additionally requested CFIUS overview specialised chips in overseas mining {hardware} to evaluate broader coverage implications.

Because the US continues to observe overseas crypto know-how, the case underscores the stress between quickly increasing digital asset industries and nationwide safety issues, particularly when high-profile political figures are concerned.