By Gretchen A. Peck
For many of their users, mobile messaging apps are just expedient little tools for texting and sharing photos or videos with friends who use the same app. The fact that those messages and content are encrypted is just an added a perk. But for journalists and their sources—especially sensitive sources like whistleblowers—encrypted messaging apps are an increasingly valuable means of communication, which provide a modicum of assurance that the information being exchanged is private and protected from anyone outside of that conversational relationship.
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Photo: Devlin Barrett. Barrett covers national security and law enforcement for The Washington Post.