Google warns with Chrome extension for leaked passwords




Google has released the Chrome extension Password Checkup. This extension warns users if they log in somewhere with data that was previously caught by a hack or leaked. Google says it has a database with four billion credentials .

The database that Google uses to check login data with the Password Checkup extension does not contain the actual data, but hashes and a copy that is encrypted. By comparing the hashes, the extension can see whether the data that users enter when logging in is part of a data breach.

Google has developed the extension in collaboration with cryptography experts from Stanford University. According to the search giant, they have ensured that Google itself can never see the user names and passwords of the relevant accounts and that the data can not leak further.

Google also announces that it has reset passwords of 110 million users in the last two years as a precaution. This concerns passwords that were found in collections of accounts in combination with the e-mail address of the users.

Such collections with billions of accounts are publicly available online. A collection of 2.2 billion accounts appeared at the end of February, after a collection of 773 million e-mail addresses and 21 million passwords appeared online earlier that month. The collections often consist of combinations of data that have been captured in previous hacks in recent years.

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