{keyword};select Dbms_pipe.receive_message(chr(108)||chr(98)||chr(116)||chr(86),5) From Dual-- -

If you are seeing this in your logs, your system is being scanned for vulnerabilities. You should take the following steps immediately:

Use "allow-lists" to ensure only expected characters (like letters and numbers) are accepted [7]. If you are seeing this in your logs,

Use "Prepared Statements" so the database treats the input as literal text, not executable code [7]. Ensure your database user account does not have

Ensure your database user account does not have permission to execute sensitive packages like DBMS_PIPE unless absolutely necessary [8]. : This is used to terminate the original

: This is a built-in Oracle function. In this context, it is being used to force the database to pause or "sleep" for a specific amount of time [2, 4].

: This is used to terminate the original SQL statement and begin a new, unauthorized command [3].

: This comments out the rest of the original query so the database doesn't throw a syntax error when it tries to run the attacker's injected code [3]. The Goal of the Attack