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I have a site which will show sensitive information. I am using Anti Forgery Tokens etc to protect against XSRF in POSTS. However I am worried about someone being able to view sensitive info from a GET. What is the recommended practice for protecting read only data sent via a GET in .Net MVC 2?
If you are sure that
GETrequests are read-only, then you have nothing to worry from XSRF. Its not possible to steal information from another website using just XSRF, and so you don’t need to protect urls via a token. In fact, using tokens in the URL is going to make it impossible to use bookmarks.Having said that, you should be 100% sure there are no XSS vulnerabilities in your app. If there are, an attacker doesn’t need to bother with XSRF and unpredictable tokens.