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Simon Willison

@mahryekuh it looks so me like that's only a problem if you have an XSS hole allowing attackers to execute malicious JavaScript, in which case localstorage leaks are the least of your problems!

2 comments
Phil Johnston

@simon @mahryekuh localStorage can affect someone who is using a public computer, like at a library. The next person to use the machine will have their form data available.

Simon Willison

@johnstonphilip @mahryekuh I guess you could encrypt it with a public key in the JavaScript and have a private key server-side that is only available when the user is signed into their account

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