Keep WhatsApp and similar messaging apps up-to-date

Internet-based chat apps are generally safer than plain SMS (text) messages, but they’re not necessarily bulletproof. An exploit in WhatsApp, allowing malware injection, showed that even apps touting “end-to-end encryption” sometimes have vulnerabilities. To stay safe, apply any updates as soon as possible or – for particularly sensitive conversations – take them offline or use a channel such as encrypted email.