What is the Signal messaging app and how secure is it?

Tom Gerken

14 April 2025

4 min

PME All levels

BLUF

Signal is an encryption service limited to the sender and receivers. Messages can disappear after a set period of time. Signal is not suitable for highly secure transmissions due to risks with communicating via mobile devices.

READ: What is the Signal messaging app and how secure is it?

References

BBC News: High factual reporting
COLLECTIONS/The Runway (airforce.gov.au)
RAAF RUNWAY: RATIONALE, GUIDELINES, LEARNING OUTCOMES, ETC.

What is the Signal messaging app and how secure is it?

BLUF

References

Related articles

Commandant says Marines should have a say in whether they change duty stations

Soft skills, self-belief and curiosity: Key qualities to develop for success on civvy street

Calls for national strategy to tackle apprentice hazing and protect workers’ mental health

We asked pro organizers for help tidying our messy office storage closet. These are the 10 products they recommended