The messaging app could be 'defective', the US president has claimed in response to the Yemen bombing chat leak

US President Donald Trump has cast doubt on the Signal messaging platform following the leak of a private conversation among senior members of his administration about military strikes in Yemen. He has dismissed the media response to the episode as a "witch hunt."

The Trump administration confirmed this week that a journalist had been mistakenly added to a private chat on Signal discussing a planned attack on Houthi militants. The US launched large-scale airstrikes on March 15 in the Yemeni capital Sanaa and the northern province Saada, reportedly killing dozens, in response to Houthi attacks on Red Sea shipping.

Asked by reporters on Wednesday about the leak, Trump said he was not concerned, insisting that "there was no harm done, because the attack was unbelievably successful."

He dismissed the media's interest as "a witch hunt," accusing journalists of exaggerating the situation after a question about whether the administration was downplaying the scandal.

"I think Signal could be defective, to be honest with you," Trump said. "We use Signal, and everybody uses Signal, but it could be a defective platform, and we're gonna have to find that out," he added.

On Monday, The Atlantic magazine published a report by editor-in-chief Jeffrey Goldberg revealing a discussion among senior administration officials about military strategy for targeting the Houthis. Goldberg said he gained access to a Signal group chat from a user identified as "Mike Waltz." 

The chat, titled "Houthi PC small group," reportedly included Vice President J.D. Vance, Defense Secretary Pete Hegseth, Director of National Intelligence Tulsi Gabbard, and other cabinet officials. The group had been engaged in what The Atlantic described as a "fascinating policy discussion" in the days leading up to Trump's order for the strikes.

Following the White House's denial that any classified information was leaked, The Atlantic released additional screenshots on Wednesday. Hegseth has insisted that "nobody was texting war plans."

Asked whether the leaked material was classified, Trump replied: "Well, that's what I've heard. I don't know[.]"

National Security Adviser Mike Waltz has taken "full responsibility" for the incident, calling it "embarrassing" in a Fox News interview on Tuesday.

Trump defended Waltz amid calls for his resignation, telling reporters "I guess he said he claimed responsibility." 

He also rejected speculation about Hegseth's future, stating the defense secretary "had nothing to do with this" and that he is doing an "excellent job."

Signal dismissed media reports of possible "vulnerabilities" on Tuesday, calling its software "the gold standard for private, secure communications."