-4640 Union All Select Null,null,null,null,'qbqvq'||'lbznmmwdachxaypteqetdoupxsqdsedwqcwkldne'||'qqbqq',null,null,null,null-- Exgp < 720p >

If this string was found in your server logs or application inputs, it indicates that an was performed against your system. It is a signature of a tool checking if it can "reflect" data back to itself through your database.

Are you seeing this in your or during a security audit ? If this string was found in your server

: These act as placeholders to match the exact number of columns expected by the original query. If this string was found in your server