U.S. National Security Advisor Mike Waltz was seen using a modified version of the messaging app Signal during a Cabinet meeting, despite President Donald Trump's prior discouragement of its use after the "Signalgate" controversy. A photograph showed Waltz with the app active and conversations involving at least six officials, including Vice President JD Vance and Secretary of State Marco Rubio, indicating ongoing discussions. White House spokeswoman Anna Kelly confirmed that Signal is an approved application for government use, and the modified version appeared to be associated with TeleMessage, a company that provides archiving services for messaging applications. This adaptation raises concerns about the integrity of Signal's end-to-end encryption due to potential external storage of messages, which could compromise privacy. TeleMessage has ties to military intelligence and was recently acquired by Smarsh. The use of Signal by Trump administration officials has been controversial in the past, particularly regarding military discussions that inadvertently involved a journalist.