Apps like Signal, WhatsApp, and iMessage promise nobody can read your messages. Mostly true - but in 2026, encrypted chat has three gaps you can't ignore, and the biggest one might already be sitting on your own computer. We sat down with David Wiseman, BlackBerry's VP of Secure Communications, to find out what end-to-end encryption actually protects, what it doesn't, and how attackers are walking around it without breaking a single line of code.