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Posted by Jennifer Pullman, Kurt Thomas, and Elie Bursztein, Spam and Abuse research

Back in February, we announced the Password Checkup extension for Chrome to help keep all your online accounts safe from hijacking. The extension displays a warning whenever you sign in to a site using one of over 4 billion usernames and passwords that Google knows to be unsafe due to a third-party data breach. Since our launch, over 650,000 people have participated in our early experiment. In the first month alone, we scanned 21 million usernames and passwords and flagged over 316,000 as unsafe—1.5% of sign-ins scanned by

This post first appeared on Google security. Read the original article.

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