-7728') Union All Select 34,34,34,34# -

: It allows an attacker to identify the structure of your database tables.

: This method is frequently used to bypass login screens without a valid password. -7728') UNION ALL SELECT 34,34,34,34#

: These are comment characters used to "comment out" the rest of the original, legitimate SQL query so it doesn't cause a syntax error. Vulnerability Report : It allows an attacker to identify the

: These are "dummy" values used to determine the correct number of columns in the original table. For a UNION to work, the second query must have the exact same number of columns as the first. -7728') UNION ALL SELECT 34,34,34,34#