CSRF

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Cross-Site Referral Forgery

CSRF can occur when a web form does not properly check its HTTP referrer information to ensure that a browser came from its own site. This can be especially dangerous to users of a site with a form like this. CSRF is likely one of the most prominent vulnerabilities today.

The result of a successful CSRF attack is performing actions in the context of a user's session. If a user is logged into one site, and clicks a link to another, the other site's code may control what the logged-in user does on the original site.

When mixed with XSS, this attack becomes the much more dangerous XSRF.

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