The messaging app used by at least one top Trump administration official has suspended its services following reports of hackers stealing data from the app. Experts told WIRED on Friday that, by definition, TM Signal's archiving feature undermined the end-to-end encryption that makes the actual Signal communication app secure and private. TeleMessage was founded in Israel in 1999 and was acquired last year by the US-based digital communications archiving company Smarsh. Dubbed SignalGate, the scandal ultimately preceded Waltz's ouster as national security adviser. Leaked data reportedly from TM Signal indicates that multiple US Customs and Border Protection agents may be using the Signal look-alike.