Forbes contributors publish independent expert analyses and insights. Zak Doffman writes about security, surveillance and privacy. Hackers are now using spyware to attack WhatsApp, Signal and other ...

WhatsApp users on Apple iPhone can now choose the popular messaging service as their default app, from today. It will also work for calls and there are ramifications which will apply with Siri, too.

WhatsApp has recently begun issuing warnings to its users, and it's important to understand what's happening and what you need to do. If you're an Android user, you might be affected by these changes ...