{keyword}');select Sleep(5)# -

Malicious use of SLEEP() can lead to Denial of Service (DoS) by overloading the database with connection requests [3]. How to Prevent This Attack

: This attempts to prematurely close the original, legitimate SQL query statement intended by the developers [2].

If you enter this payload into a form and the website takes roughly 5 seconds longer than usual to load, it confirms that the application is vulnerable to SQL injection [2]. {KEYWORD}');SELECT SLEEP(5)#

: This is a comment character in MySQL. It tells the database to ignore the rest of the original SQL statement, ensuring the injected command doesn't cause a syntax error [1]. Purpose: Blind SQL Injection

: This represents the legitimate input field or parameter in a web application (e.g., a search box, user ID field, or URL parameter) [1]. Malicious use of SLEEP() can lead to Denial

: This is the malicious command. It instructs the database to pause or "sleep" for 5 seconds before responding to the query [2, 3].

This technique is known as [3].

Ensure the database user account used by the web application has limited permissions.