HMAC stands for Hash-Based Message Authentication Code. It is a security mechanism used to verify the integrity and authenticity of a message exchanged between a client and a server.

As previewed last year, Google Messages is beginning to roll out QR code-based key verification to confirm that you’re “communicating with the person you intend to.” Once available, open a ...

The new QR code-based key authentication feature is available to ensure you’re communicating with the person you want to communicate with. Once the feature is available, you can access details by ...

Google has unveiled a new QR code-based key verification system for its Google Messages app, specifically designed to enhance security for Rich Communication Services (RCS) messaging. The system ...

Do you receive login security codes for your online accounts via text message? These are the six- or seven-digit numbers sent via SMS that you need to enter along with your password when trying to ...

We've probably all received confirmation codes sent via text message when trying to sign into an account. Those codes are supposed to serve as two-factor authentication to confirm our identity and ...

A major security incident has come to light involving the exposure of one million two-factor authentication (2FA) codes, revealing vulnerabilities in the authentication system widely used by major ...

Jon has been an author at Android Police since 2021. He primarily writes features and editorials covering the latest Android news, but occasionally reviews hardware and Android apps. His favorite ...

You'll soon see a big change in how your Gmail account is secured and your two-factor authenticated logins are handled. Google has said it's planning to stop sending 2FA codes via text message to ...

Update, Feb. 26, 2025: This story, originally published Feb. 23, now includes additional commentary regarding the potential security implications of the decision to deprecate SMS from the Gmail ...