This code takes the number from the URL and drops it directly into a SQL command. Because the input isn't "sanitized," an attacker can replace 1 with malicious code. For example, changing the URL to php?id=1' (adding a single quote) might cause the database to crash and return an error, signaling that the site is vulnerable to a SQL injection attack. The "Dorking" Phenomenon
The use of advanced search operators to find security holes is known as or Google Hacking . The Google Hacking Database (GHDB) contains thousands of these strings. inurl:php?id=1 became the "Hello World" of dorking because: Ubiquity: Millions of sites used this exact URL structure. Simplicity: It’s easy to remember and type.
Web Application Firewalls now block users who attempt to put SQL characters like ' or -- into a URL. inurl php id 1
?id= is a GET parameter used to request a specific record from a database (like a product page or a news article). 1 is the value being passed to that parameter.
In the early 2000s, many developers wrote code that looked like this: $query = "SELECT * FROM products WHERE id = " . $_GET['id']; This code takes the number from the URL
When combined, the query returns a list of websites that use PHP and have indexed pages utilizing a simple ID-based naming convention. The Connection to SQL Injection (SQLi)
: This is a search operator that tells Google to restrict results to pages where the specified text appears anywhere in the URL. The "Dorking" Phenomenon The use of advanced search
.php indicates the server is using the PHP scripting language.