WASHINGTON (AP) — Defense Secretary Pete Hegseth had an internet connection that bypassed the Pentagon’s security protocols set up in his office to use the Signal messaging app on a personal computer, two people familiar with the line told The Associated Press.

The existence of the unsecured internet connection is the latest revelation about Hegseth’s use of the unclassified app and raises the possibility that sensitive defense information could have been put at risk of potential hacking or surveillance.

Known as a “dirty” internet line by the IT industry, it connects directly to the public internet where the user’s information and the websites accessed do not have the same security filters or protocols that the Pentagon’s secured connections maintain.

Other Pentagon offices have used them, particularly if there’s a need to monitor information or websites that would otherwise be blocked.

But the biggest advantage of using such a line is that the user would not show up as one of the many IP addresses assigned to the Defense Department — essentially the user is masked, according to a senior U.S. official familiar with military network security.

But it also can expose users to hacking and surveillance. A “dirty” line — just like any public internet connection — also may lack the recordkeeping compliance required by federal law, the official said.

All three spoke on condition of anonymity to discuss a sensitive matter.

A ‘dirty’ internet line to use Signal

The two people familiar with the line said Hegseth had it set up in his office to use the Signal app, which has become a flashpoint following revelations that he posted sensitive details about a military airstrike in two chats that each had more than a dozen people. One of the chats included his wife and brother, while the other included President Donald Trump’s top national security officials.

Asked about Hegseth’s use of