The string ') WAITFOR DELAY '0:0:5' AND ('nNDN'='nNDN is designed to trick a database into pausing for five seconds before responding. If the application takes significantly longer to load when you submit this keyword, it confirms that the input is being executed directly by the database, indicating a critical security flaw. Breakdown of the Payload:
: Ensure all user-supplied data is validated and filtered before it reaches the backend. {KEYWORD}') WAITFOR DELAY '0:0:5' AND ('nNDN'='nNDN
: Attempts to close the existing SQL query's syntax (like a string literal and parenthesis). The string ') WAITFOR DELAY '0:0:5' AND ('nNDN'='nNDN