WhatsApp just introduced a major update to its security settings and you should take advantage of it as soon as you can.
The app is officially adding support for two-step verification, which prevents someone else from activating your phone number without a six-digit passcode.
The feature, which has been testing in beta since November, is starting to roll out now to WhatsApp's iOS, Android and Windows apps. Head over to Settings —> Account —> Two-step verification —> Enable to activate it.
Once you do, the app will ask you to provide an email and set a six-digit passcode. You don't have to provide your email address, but if you don't, you will have a more difficult time accessing your account should you forget your passcode (WhatsApp says it...