Cross-site Request Forgery

Cross-site request forgery, also known as a one-click attack or session riding and abbreviated as CSRF (sometimes pronounced sea-surf) or XSRF, is a type of malicious exploit of a website whereby unauthorized commands are transmitted from a user that the website trusts. Unlike cross-site scripting (XSS), which exploits the trust a user has for a particular site, CSRF exploits the trust that a site has in a user's browser.

Read more about Cross-site Request Forgery:  History, Example and Characteristics, Limitations, Severity, Forging Login Requests, Other Approaches To CSRF, Prevention

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