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

Senator pushes for new rules letting academy athletes play pro sports

Sailors who can’t deploy will be moved to empty jobs under Navy program

US using low-cost drones on Iran

I have a bit of a cold. Am I sick enough to take a day off work?