{keyword}') Waitfor Delay '0:0:5' And ('nndn'='nndn -

: A trailing logic statement that ensures the rest of the original query remains syntactically "correct" so the database doesn't just throw an immediate error. Recommendations:

: If you do not have explicit permission to test this site, stop immediately. Unauthorized security testing can be illegal. {KEYWORD}') WAITFOR DELAY '0:0:5' AND ('nNDN'='nNDN

It looks like you are testing for a vulnerability, specifically a time-based blind SQL injection . : A trailing logic statement that ensures the

: A T-SQL command (used in Microsoft SQL Server) that instructs the system to wait for 5 seconds. {KEYWORD}') WAITFOR DELAY '0:0:5' AND ('nNDN'='nNDN