A mistake in the process used by the Signal Desktop application to encrypt locally stored messages leaves them wide open to an attacker.

A company claims it can decrypt messages sent using the Signal messenger app on Android phones, despite it being considered to be one of the most secure apps around that offers end-to-end encryption.

Israeli security firm Cellebrite has claimed that it can decrypt messages from Signal's highly secure chat and voice-call app, boasting that it could disrupt communications from "gang members ...