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Insecure Direct Object Reference (IDOR) & How to Protect Against it

by Karan Kajla

Insecure Direct Object Reference & How to Protect Against it | Warrant Blog

Insecure Direct Object Reference (IDOR) is one of the most common forms of broken access control which OWASP recently listed as the number one application security issue in 2021. A quick search for "IDOR" on Hacker One's Hacktivity feed shows that many top tech companies (and even the U.S. Department of Defense) have fallen victim to IDOR, in some cases paying out well over $10,000 per bug bounty. In this post, I'll explain what IDOR is, what causes it, and ways to protect your application against it.

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Application Security
 on November 20, 2021
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