WhatsApp doesn't seem very secure:<p><i>As of December 1, 2015, WhatsApp has a score of 2 out of 7 points on the Electronic Frontier Foundation's secure messaging scorecard. It has received points for having communications encrypted in transit and having completed an independent security audit. It is missing points because communications are not encrypted with a key the provider doesn't have access to, users can't verify contacts' identities, past messages are not secure if the encryption keys are stolen, the code is not open to independent review, and the security design is not properly documented</i><p><a href="https://en.wikipedia.org/wiki/WhatsApp" rel="nofollow">https://en.wikipedia.org/wiki/WhatsApp</a>