National Security Advisor Michael Waltz was preparing for a television interview at the White House using the messaging app TeleMessage, which is currently facing a temporary suspension due to a security breach. The parent company, Smarsh, is investigating the incident and has halted all TeleMessage services while engaging an external cybersecurity firm. The breach reportedly involves the theft of data from messages sent via TeleMessage's versions of popular messaging platforms, but there is no indication that Waltz's messages were accessed. The White House has not responded to inquiries about the service suspension. Waltz was previously photographed using TeleMessage while communicating with various officials. Former President Donald Trump intends to nominate Waltz as the U.S. ambassador to the United Nations, with Secretary of State Marco Rubio serving as the interim national security advisor. Concerns have been raised about whether private messages are automatically deleted, potentially violating federal records-retention laws, and TeleMessage may compromise Signal's end-to-end encryption.