Mega'/**/and/**/dbms_pipe.receive_message('a',2)='a -

: This is likely a placeholder or a legitimate input value followed by a single quote ( ' ). The quote is used to "break out" of the intended SQL query string.

: A logical operator used to append a new condition to the original query. MEGA'/**/and/**/DBMS_PIPE.RECEIVE_MESSAGE('a',2)='a

In a "blind" injection, the database doesn't return error messages or data directly to the screen. Instead, the attacker observes the : The attacker sends the request. : This is likely a placeholder or a

: This is the most effective defense. It ensures the database treats the input as data only, never as executable code. In a "blind" injection, the database doesn't return

If the page takes ~2 seconds longer than usual to load, they know the DBMS_PIPE command was successfully executed.

To protect against this type of vulnerability, you should implement the following: