The Trump administration is facing heavy blowback for using Signal, a messaging app, to discuss sensitive military plans. On March 24, officials’ usage of the app was revealed after The Atlantic editor Jeffrey Goldberg published a story titled "The Trump Administration Accidentally Texted Me Its War Plans,

With news this week of the messaging app being used to discuss war plans, we get you up to speed on what Signal should be used for—and what it shouldn’t.

To get at the general settings for Signal, from the Chats tab tap the three dots (top right) then Settings on Android, or tap your profile picture (top left) and then Settings on iOS. You can change a number of options from here: Choose Appearance, for example, and you’re able to change the app theme, colors, and icon.

Is the Signal messaging app really less secure than government systems? NBC News’ Kevin Collier explains Signal’s strengths and limits after an Atlantic magazine editor was accidentally added to a group chat where President Trump’s Cabinet officials discussed military plans.

In the US, daily downloads tripled to more than 60,000. In Yemen, where the app is less popular, downloads increased by five times to more than 1,000 per day, bringing the platform from No. 50 in the iOS social media app rankings to No.

The self-inflicted leak of sensitive war plans via the popular messaging app indicates that the administration may be ignoring other basic cybersecurity protocols.

Sources tell CBS News the Signal chat involving senior Trump administration officials included sensitive intelligence Israel provided to the U.S.

Israel reportedly supplied sensitive intelligence about a human target discussed in a Signal chat that included a journalist.

WASHINGTON—Israel provided sensitive intelligence from a human source in Yemen on a key Houthi military operative targeted in an attack described by national security adviser Mike Waltz in an unclassified Signal chat with senior Trump administration officials,

In a report by the Wall Street Journal, Hegseth is accused of bringing his wife to two meetings involving foreign officials.

Judge James E. Boasberg said top officials, including the defense secretary, the national security adviser and the secretary of state, must preserve the messages they exchanged.

The leaders of the U.S. Senate Armed Services Committee confirmed on Thursday that they have asked the Defense Department for an inquiry into Trump administration officials' discussion of sensitive attack plans on the Signal messaging app,

Trump’s tariffs are a textbook excess of the sort that constitutional checks are designed to curb.

MSNBC’s Melissa Murray reports on the continuing fallout over the Trump administration’s military group chat leak. Retired Army General Paul Eaton and Michigan Law Professor Leah Litman join to discuss.

Colo., told Morning Edition that "the risk of casualties goes up tremendously" if adversaries learn of military operations. He says Defense Secretary Pete Hegseth should resign over the Signal chat group leak.