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

When does workplace banter cross the line into bullying?

Redefining Recruitment in the Royal Australian Air Force

The Agony and the Ecstasy of Accountability

Train like you fight: Taiwan comes to grips with an old military adage