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

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

: This operator combines the results of the original query with a new set of data.

: Attackers can replace the dummy "34" values with actual database commands to steal usernames, passwords, or sensitive customer data. -7728') UNION ALL SELECT 34,34,34,34#

To secure a system against these types of attacks, developers should use Parameterized Queries (Prepared Statements) rather than building queries with string concatenation. This ensures that user input is always treated as data, not as executable code.

If entering this string into a search bar or login field returns a page displaying the number "" multiple times, it indicates the application is vulnerable to SQL injection . Potential Risks: : It allows an attacker to identify the

: 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

: 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. To secure a system against these types of

: This method is frequently used to bypass login screens without a valid password.