How does LastPass security challenge work?

When you click to run the Security Challenge, LastPass downloads your encrypted data and uses Javascript to locally decrypt the data. Your data is then analyzed to look for weak and duplicate passwords and attempts to identify sites in your vault have been recently compromised. 

For any weak or duplicate passwords found, we suggest changing these right away. For supported sites, we also offer an Automatic Password Change feature.

 

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Still Having Trouble?
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