(C) Alec Muffett's DropSafe blog.
Author Name: Alec Muffett
This story was originally published on allecmuffett.com. [1]
License: CC-BY-SA 3.0.[2]


What is messaging app Signal and how secure is it?

2025-03

The messaging app Signal has made headlines after the White House confirmed it was used for a secret group chat between senior US officials.

The editor-in-chief of the Atlantic, Jeffrey Goldberg, was inadvertently added to the group where plans for a strike against the Houthi group in Yemen were discussed.

Signal's creator Matthew Rosenfeld - who is better known by the pseudonym Moxie Marlinspike - joked, external the "great reasons" to join the platform now included "the opportunity for the vice president of the United States of America to randomly add you to a group chat for coordination of sensitive military operations".

But others are not seeing the funny side, with Democrat Senate leader Chuck Schumer calling it "one of the most stunning" military intelligence leaks in history and calling for an investigation.

But what actually is Signal - and how secure or otherwise were the senior politicians' communications on it?
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[1] URL: https://www.bbc.co.uk/news/articles/c1kjd091019o
[2] URL: https://creativecommons.org/licenses/by-sa/3.0/

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