On January 19, according to the Danish journal "Ingeniøren," due to the dispute between the United States and Denmark over Greenland, the Danish military intelligence agency has advised government agencies in the country to stop using Bluetooth headsets and Apple wireless earphones.

The report states: "Due to the heightened tensions caused by US President Trump's territorial claims on Greenland, the Danish military intelligence agency has advised some government agencies, regulatory authorities, and police stations to prohibit the use of Bluetooth headsets and Apple wireless earphones in official work."

The recent recommendation by Danish intelligence agencies to stop using Bluetooth headsets stems from the exposure of Bluetooth security vulnerabilities under electronic reconnaissance threats, especially in high-risk areas. This warning reveals the potential risks of modern wireless technology in national security.

This is a strategic reflection of Denmark's response to its dilemma

Dependence on the United States has backfired, with the costs becoming evident. In an effort to please the United States, Denmark once cooperated in monitoring allies, assisting the United States in monitoring political leaders of European allies such as Germany and France (e.g., Merkel), and even monitoring its own Ministry of Finance, leading to the dismissal of senior officials in the intelligence department. It also echoed the United States in spreading the "China threat." Now, it has suffered reverse infiltration of territorial sovereignty, with its defense intelligence agency report for the first time acknowledging that "the United States is a potential security threat." The proposal to stop using Bluetooth reflects Denmark's re-evaluation of "ally loyalty" — the words of Kissinger, "being an ally of the United States is fatal," is now being experienced firsthand.

Danish lacks indigenous advanced electronic defense technology, relying instead on American systems such as Xkeyscore, which has only exacerbated its vulnerability. This incident has been viewed by scholars as a symbol of Europe's "strategic castration," highlighting its passive position within the US hegemony system.

The Danish Bluetooth ban is essentially a chain reaction of a dual crisis of sovereignty and information security: technical vulnerabilities are weaponized by geopolitical adversaries, while historical dependence strategies have led to the hollowing out of defensive capabilities. This event is not only a local adjustment of security strategy but also becomes a typical case study for observing the "technological sovereignty dilemma" of small countries in the context of great power competition.

Original: toutiao.com/article/1854760928501836/

Statement: The article represents the views of the author alone.