Legal scholars say the government is testing the limits of the Fifth Amendment in a landmark search warrant case.

WhatsApp’s addition of end-to-end encryption is a good start, but does not present users with a complete solution that protects against the prying eyes of intrusive governments and nosey third-parties. That’s the consensus among privacy and security experts that commend Facebook-owned WhatsApp for flipping the switch on end-to-end encryption for its one billion users worldwide....

The world’s largest online communications company WhatsApp, with one billion users, announced Tuesday it added end-to-end encryption to its entire platform. The move is seen as a major win for security and privacy advocates. It also shifts the encryption spotlight away from Apple and its battle with the FBI and thrusts the Facebook-owned WhatsApp center stage. Co-founders...