US President Donald Trump-linked app shuts down temporarily after cybersecurity breach; Everything we know so far

The communications app used by U.S. President Donald Trump’s former national security adviser, Mike Waltz, said Monday that it had suspended services following a reported hack that exposed some of its messages.

The Department of Homeland Security separately said that customs officials had disabled the app on their devices. Portland, Oregon-based Smarsh, which runs the TeleMessage app, said in an email it was “investigating a potential security incident” and was suspending all its services “out of an abundance of caution.”