Secure Messaging App Showdown: WhatsApp vs. Signal (Lifehacker)

Lifehacker: Secure Messaging App Showdown: WhatsApp vs. Signal. “So, you’re interested in secure, encrypted chat apps. You have a few different choices, but as with any chat app, what all your friends are using is important. To that end, Signal and WhatsApp are easily the most popular. Here’s how they compare.”