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Messaging app, which is used by Trump Official, blocked operations after the registered hack

The national security advisor Michael Waltz looks at his phone when he prepares for a television interview in the White House on May 1, 2025 in Washington, DC.

Andrew Harnik | Getty pictures

The messaging app that President Donald Trump's former national security advisor was temporarily suspended during a cabinet seat after a reported hack last week, the parent company announced on Monday.

“Telemessage examines a potential security incident,” said a spokesman for Smarsh who executes the app in an explanation. “We quickly acted in the discovery to contain it and hired an external cyber security company to support our investigation.”

“All telemessage services were temporarily exposed to a variety of caution. All other Smarsh products and services remain fully functional,” said the spokesman.

The potential hack from Telemessage, an app founded by Israel, who acts as a modified version of the encrypted messenger signal, was first reported by the Tech New News Site 404 media on Sunday.

The data stolen by the hacker contains the content of messages that were sent according to 404 media with the versions of Telemessage versions of Signal, WhatsApp, Telegram and Wechat.

The hacker has not received the messages of Trump's national security consultant Mike Waltz at the time or the people he spoke to reported 404 media.

The White House did not react immediately to the request from CNBC for a statement on the temporary suspension of telemessage services. It defended the use of signal within the administration and explained that the app has been approved for the official use and is invited to government telephones.

But Trump had previously held officials in his administration from using the Leck Controvers as a “signal gate” signal when Waltz accidentally added a journalist to a private discussion about the outstanding military plans.

“I think we learned: Maybe you don't use a signal, okay?” Trump said last month in an interview with the Atlantic.

Trump's comments were published two days before the cabinet seats on Wednesday when Waltz was photographed on his phone with an open telemessage.

In the photo of Waltz, he showed that he communicated with Vice President JD Vance, Foreign Minister Marco Rubio, director of the National Secret Service Tulsi Gabbard and special representative Steve Witkoff.

One day after the cabinet meeting, Trump announced that Waltz as a US ambassador at the United Nations.

Rubio, who is already funding as Foreign Minister, deputy administrator of the US Agency for International Development and the United States archivist, will serve as an interim National Security Advisor until the office is filled, said Trump.

Part of the signal gate controversy included questions about whether the messages were automatically deleted in this private thread, which may implied the laws on the federal protocol statement.

The telemessage markets itself as a way for government agencies and companies to keep these laws by creating backup copies of chats.

Last week, 404 media reported that Telemessage could undermine the end-to-end encryption of the signal what protects the privacy of news-because “the messages can be called up later after they have been saved somewhere else”.

A signal spokesman told NBC News on Friday: “We cannot guarantee the data protection or security properties of unofficial signal versions.”

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