A Venmo account under the name Michael Waltz, carrying a profile photo of the national security adviser and connected to accounts bearing the names of people closely associated with him, was left open to the public until Wednesday afternoon. A WIRED analysis shows that the account revealed the names of hundreds of Waltzs personal and professional associates, including journalists, military officers, lobbyists, and othersinformation a foreign intelligence service or other actors could exploit for any number of ends, experts say.Among the accounts linked to Michael Waltz are ones that appear to belong to Susie Wiles, the White House chief of staff, and Walker Barrett, a staffer on the United States National Security Council. Both were fellow participants in a now-infamous Signal group chat called Houthi PC small group.The White House declined to comment after being presented with WIREDs findings, but the accounts appearing to belong to Waltz and Wiles went fully private following WIREDs inquiry.Earlier this week, The Atlantic reported that an account with the name Michael Waltz accidentally invited the publications editor in chief, Jeffrey Goldberg, to the chat, in which senior administration officials discussed plans for a strike on Yemen. (Waltz told Fox News Laura Ingraham he takes full responsibility for inviting Goldberg, adding, We have some of the best technology minds looking at how this happened.) Over the encrypted messaging app, which Department of Defense guidelines bar from being used for the discussion of any nonpublic defense information, the group debated whether a strike should be carried out at all. Hours after an account with the name of defense secretary Pete Hegseth shared missile targets, strike timing, and other highly sensitive operational details of a coming strike, US forces bombed Houthi targets in Yemen, reportedly killing at least 53 people.A WIRED review of public data exposed on Venmo accounts associated with senior administration officials suggests that the Signal group chat was not an isolated mistake, but part of a broader pattern of what national security experts describe as reckless behavior by some of the most powerful people in the US government.The Venmo account under Waltzs name includes a 328-person friend list. Among them are accounts sharing the names of people closely associated with Waltz, such as Barrett, formerly Waltzs deputy chief of staff when Waltz was a member of the House of Representatives, and Micah Thomas Ketchel, former chief of staff to Waltz and currently a senior adviser to Waltz and President Donald Trump.Got a Tip?Are you a current or former government employee who wants to talk about what's happening? We'd like to hear from you. Using a nonwork phone or computer, contact the reporter securely on Signal at dmehro.89 or timmarchman.01.Other accounts carry the names of a wide range of media figures, from on-air personalities like Bret Baier and Brian Kilmeade of Fox News and Brianna Keilar and Kristen Holmes of CNN to a cable news producer, a prominent national security reporter, local news anchors, documentarians, and noted conspiracy theorist Ivan Raiklin, who calls himself the the secretary of retribution and once created a deep state target list. (Fox News declined to comment; CNN did not respond to a request for comment.)