Forbes contributors publish independent expert analyses and insights. Davey Winder is a veteran cybersecurity writer, hacker and analyst. Update, Jan. 25, 2025: This story, originally published Jan.

In an age of constant communication, receiving phone calls or messages from unknown numbers has become increasingly common. Whether it's a missed call from an unfamiliar number, a potential scam or a ...

Many websites and apps rely on a weak form of two-factor authentication (2FA) that involves texting you a short number or code. These sites and apps might also offer to make an automated voice call ...