Too Long; Didn't Read
Dan Arel is a journalist, author, and privacy advocate. He explains how to choose the most secure, privacy respecting messaging services. Each service, no matter how secure, can be compromised. Each user needs to decide what their privacy goals are. If your goal is to avoid corporate tracking and the harvesting of your data, you can eliminate apps such as Facebook Messenger and WhatsApp, both services owned by Facebook and while offering encrypted messaging (optional in Messenger), Facebook reads your non-encrypted messages, and WhatsApp has fallen victim to security breaches.