: If a website relies solely on sequential IDs (like id=1 , id=2 , id=3 ) to display user profiles or invoices without checking if the visiting user has permission to view that specific record, an attacker can simply change the number in the URL to view unauthorized data.
By transitioning away from sequential URL parameters, adopting prepared statements, and managing how search engines crawl your infrastructure, you can prevent your platforms from appearing on a hacker's Google Dork list.
If you are a web developer or website owner, protecting your site against these types of attacks is critical. 1. Use Prepared Statements (with Parameterized Queries)
Using advanced search operators to find security flaws or specific exposed data is known as (or Google Hacking).
$db->query("SELECT * FROM items WHERE id = " . $_GET['id']); Secure Code (PDO):
If changing pk=1 to pk=2 allows a user to view another customer’s private invoice, medical record, or account details without logging in as that user, the system is vulnerable to IDOR. How Threat Actors Exploit This Footprint
Look for id= or pk= in the URL.
To understand this keyword, we have to break down its components:
To prevent an application from being discovered and exploited via this query type, development and security teams must implement the following controls:
If your site appears in such searches, mitigate risks by:
| URL Observed | Potential Risk | |--------------|----------------| | site.com/user?pk=1&id=1 | IDOR, SQLi | | site.com/download?pk=id=1 | Parameter pollution | | site.com/api/get?pk=1 | Unauthenticated data exposure |
White-hat researchers use it to find and report vulnerabilities in web frameworks.
All because of a simple, indexed URL containing pk id 1 .