The problem is that the encryption key is stored on the machine in a local plain text file. Any malware able to read unencrypted local files could obtain the key, and therefore decrypt the messages.

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

An Israeli security firm claims its researchers have successfully decrypted Signal’s infamous end-to-end encryption — though the validity of that statement is anyone’s guess. Signal is ...

To guarantee high data security, encryption must be unbreakable while the data remains rapidly and easily readable. A novel strategy for optical encryption/decryption of information has now been ...