Any time your username and password are detected among compromised credentials, Google's extension triggers an automatic warning, and suggests a password change.
However, Password Checkup will let you know that something's wrong when you try to login to a site with a specific user name and password combination that was compromised.
The extension, once installed, automatically reads any login data that you enter and checks it against a database of almost four billion usernames and passwords that are known to have been breached. Add Google account on devices, to be able to find it, so if a device is lost or stolen, "Find My Device" app from Google can help locate a lost Android device, and keep your device and information secure.
Beyond that, Google also announced Cross Account Protection.
The Password Checkup extension can be downloaded from the official Chrome Web Store, here.
At a time when instances of data breaches and malicious apps have become an everyday affair, Google has outlined a few steps for users to secure their Google account and take control of their data on the occasion of Safer Internet Day.
Password Checkup was built with privacy in mind.
For those anxious that Google will be getting a copy of all of your usernames and passwords, Google's got some good news for you.
This means the extension won't show alerts when users use simple passwords such as "123456", but only when both the username and password have been found together, as a combo, in previously leaked data. If users have the Cross Account Protection implemented, they will be notified if a Google account has been compromised.
The information Google says it'll share with those third-parties seems to be fairly limited, and includes "basic information about the event". "Since this is a first version, we will continue refining it over the coming months, including improving site compatibility and username and password field detection".