{keyword}' And (select Chr(100)||chr(85)||chr(102)||chr(83) From Sysibm.sysdummy1)=chr(100)||chr(85)||chr(102)||chr(83) And 'ikjv'='ikjv Now

If the page loads, the answer is "Yes." If it fails, the answer is "No." By repeating this, they can extract entire databases character by character. How to Prevent This

CHR(100)||CHR(85)||CHR(102)||CHR(83) translates to the string "dUfS" .The code asks the database: "Does dUfS equal dUfS?" Since this is always true, the database will process the request without an error. If the page loads, the answer is "Yes

This is a final "always true" statement used to ensure the rest of the original, legitimate SQL query doesn't break the injection. What is the Goal? What is the Goal

If the website loads normally, the attacker knows the database processed the "True" statement ( dUfS = dUfS ) successfully. This allows the attacker to append their own logic

The 'KEYWORD' starts by closing a legitimate search or input field with a single quote. This allows the attacker to append their own logic.

The reference to SYSIBM.SYSDUMMY1 is a dead giveaway that the target is an IBM DB2 database. This is a special "one-row, one-column" table used to perform calculations or retrieve system values.

This specific payload is likely a test.