WhatsApp now implements end-to-end encryption, which means only authorized users can decrypt messages. The move comes after fierce debate over the increasing use of encryption and how it affects law enforcement investigations. Law enforcement could get access to WhatsApp messages if a suspect divulged their passcode or the passcode could be obtained another way. Experts believe that may have been how the FBI unlocked the San Bernardino mass shooter’s iPhone. The encryption uses an open-source protocol called Signal, which is also used in an encrypted messaging app.”]
Source: https://www.csoonline.com/article/3052144/whatsapp-turns-on-end-to-end-encryption.html