Julia Kagan is a financial/consumer journalist and former senior editor, personal finance, of Investopedia. A message authentication code (MAC), or tag, is a security code that is typed in by the user ...

After a series of high-profile hackings, Twitter last week finally joined the likes of Google and Facebook and introduced two-factor authentication. Users opting to use the new security tool must now ...

Twitter has ended free two-factor authentication via text message, a crucial tool for users to keep themselves safe from hackers. But there’s an alternative that offers even better security and ...

Twitter is removing text-message two-factor authentication (2FA) for non-subscribers. By double-checking the identity of the person logging in, 2FA lets users to add an extra layer of security to ...

Google is to finally phase out the use of text message authentication for logging in to Gmail on laptops and PCs in favour of smartphone camera-scanned QR codes. The shift, it claims, will improve ...

Common methods include texting users a code or using an authenticator app. But on Saturday, the Twitter Support account tweeted, external only Twitter Blue subscribers would be able to use ...