A stunning breach of U.S. security has rocked military and intelligence veterans after a journalist was accidentally added to a group chat on the encrypted messaging app Signal, where senior Trump administration officials discussed plans for a military strike on Houthi rebels in Yemen. This incident has raised serious concerns among security experts, who are questioning why such sensitive communications were taking place on a free, third-party app.
“Any one of us that served in the military would be in Leavenworth if we did this,” said former Rep. Adam Kinzinger, a Republican and former Air National Guard lieutenant colonel, reflecting the outrage among security experts. Ned Price, a former CIA analyst, described the situation as a “massive security breach” while speaking to NPR, noting that former colleagues were in shock over the revelation.
The breach occurred within the “Principals Committee,” a top-tier group of U.S. national security officials tasked with handling classified matters. Normally, discussions at this level are held in highly secure venues like the White House Situation Room or through encrypted communication channels. However, the use of Signal—a widely available app designed for private conversations—has thrown traditional security practices into question.
A Serious Breach in Protocol
The Signal chat that led to the leak was reportedly created by Michael Waltz, the national security adviser to President Trump at the time. Once added to the chat, journalist Jeffrey Goldberg of The Atlantic found himself privy to sensitive military details, including operational plans for the U.S. strike on March 15. Goldberg, recognizing the severity of the breach, refrained from sharing the damaging details, which could have compromised national security further.
The use of Signal, which employs end-to-end encryption, is common among journalists for maintaining privacy. However, experts note that government officials typically use official, secure devices to transmit classified information, not a third-party messaging service. The breach also raises questions about the decision-making process of senior officials who failed to address the risks involved in using Signal for high-level military communications.
Signal Under Scrutiny
The revelation has drawn increased attention to Signal’s role in governmental communication, with some questioning whether the app’s encryption is robust enough to handle the demands of national security. While the app is known for offering high levels of privacy, it is not immune to the risks of phishing attacks or other vulnerabilities that could be exploited by foreign actors.
In response to the breach, the Pentagon sent a warning to its staff, citing potential risks of phishing attacks targeting users of the app, particularly from Russian hacker groups. However, the warning was related to phishing, not any fundamental flaw in Signal’s encryption technology. Signal itself has added new safeguards to protect users from falling victim to these types of attacks, according to Jun Harada, the company’s vice president.
Despite the breaches, the chat continued to include top national security officials, such as Vice President Vance and CIA Director John Ratcliffe. The fact that no concerns were raised about the safety of using Signal for such sensitive discussions is raising alarms among experts who stress the importance of adhering to stringent security protocols.
This incident highlights the ongoing debate about the security of digital communications and the vulnerability of even encrypted platforms when used improperly. The breach has left many wondering how such a lapse in protocol could happen and what further steps need to be taken to ensure the safety of sensitive information in the future.
As the investigation continues, national security officials and intelligence experts will be grappling with the fallout of this extraordinary breach and its implications for future communications in the U.S. government.
Attribution | Sources
Bill Chappell is a writer and editor on the News Desk in the heart of NPR’s newsroom in Washington, D.C. https://www.nprillinois.org/2025-03-25/heads-are-exploding-how-security-experts-see-the-signal-war-plan-breach