Factsheet
TM SGNL, the obscure unofficial Signal app Mike Waltz uses to text with Trump officials
On the Day He Was Fired as National Security Advisor, Mike Waltz Used an Israeli App to Archive Signal Messages
What is Moti Amar’s role in TeleMessage?
Who are Moti Amar’s peers at other companies?
What is Moti Amar’s direct phone number?
"I decided to look into this app. I discovered":
The senior executives of the company behind TM SGNL appear to be Israeli, and the CEO's bio mentions his work with Israel Defense Forces' Intelligence unit.
TM SGNL is most likely violating Signal's open source license, and the company's other apps are probably violating the proprietary licenses of other software like WhatsApp and WeChat.
The Android and iOS versions of the app are not available for the public to download, and in fact practically the only way to get the app is if you're using a device enrolled in an MDM service that's tied to an Apple Business Manager or Google Enterprise account.
I speculate about exactly how I think the Trump administration is using this (unapproved for classified info) app to discuss classified info, and how they are likely managing their fleet of iPhones.
Finally, I share a PDF and a video I discovered that go into detail about, among other things, where the chat logs may be stored.