: The attacker is trying to append their own results to your original database query.
The snippet {KEYWORD} UNION ALL SELECT NULL,NULL,NULL-- is a classic attack pattern. {KEYWORD} UNION ALL SELECT NULL,NULL,NULL-- DJGP
Instead of building strings, use prepared statements. This treats input as "data" rather than "executable code." : The attacker is trying to append their
: They use "NULL" to figure out exactly how many columns your database table has without triggering a data-type error. This treats input as "data" rather than "executable code
In the world of cybersecurity, "DJGP" or similar tags are often used as unique identifiers by automated scanners or bug hunters. When a researcher (or a bot) sends this payload, they aren't looking to steal data immediately—they are looking for a . If "DJGP" shows up in the webpage's output, they know the site is vulnerable and can be exploited. How to Stay Safe
It looks like you've provided a common SQL injection payload ( UNION ALL SELECT NULL... ) followed by the initials "DJGP."