The European Commission is recommending Signal, an end-to-end encrypted messaging app. Signal is recommended by a whos who list of cybersecurity pros, including Edward Snowden, Laura Poitras, Bruce Schneier, and Matthew Green. Unlike WhatsApp, Signal is open-source, which makes it easy to find security flaws and privacy-jeopardizing pitfalls. It doesnt store message metadata that could expose users in worldwide data centers. Signal has been criticized for putting security above security above all else else.”]
Source: https://nakedsecurity.sophos.com/2020/02/26/switch-to-signal-for-encrypted-messaging-ec-tells-staff/