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No one, including Google, is able to derive your username or password from this encrypted copy.” “Whenever Google discovers a username and password exposed by another company’s data breach, we store a hashed and encrypted copy of the data on our servers with a secret key known only to Google… When you sign in to a website, Chrome will send a hashed copy of your username and password to Google encrypted with a secret key only known to Chrome. Google is checking a hashed copy of your login details against a database of compromised data and alerting you that your info has potentially been compromised.
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This is not a sign that the site you’re accessing has been hacked – rather, it’s a new feature in the browser that was incorporated in a December 2019 update.
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