HTML5, Local Storage, and XSS

A nice new feature of HTML 5 is local storage. Briefly, this is a client side storage option that can be easily accessed via JavaScript. The benefit of local storage over other client side storage options is that local storage allows more storage space than other options (cookies, flash obj, etc). In addition, unlike cookies, the data is not automatically appended to every request by the browser. This is a nice benefit for those attempting to minimize data transmission between the client and server.

However, there are a few security considerations that should be evaluated before completely jumping on board with local storage.  

XSS and Local Storage

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