-6207' Union All Select - Null,null,null,char(113)||char(122)||char(106)||char(112)||char(113)||char(110)||char(117)||char(68)||char(76)||char(114)||char(89)||char(111)||char(84)||char(100)||char(85)||char(75)||char(116)||char(73)||char(83)||char(105)||char

Strip out potentially harmful characters like ' , -- , or ; . 3. Use an ORM (Object-Relational Mapper)

This is the most effective defense. Instead of building a query string with user input, you use placeholders. The database treats the input strictly as data, not as executable code. Strip out potentially harmful characters like ' , -- , or ;

Ensure the data matches the expected format (e.g., an ID should only be an integer). Strip out potentially harmful characters like ' , -- , or ;

Always patch your database management system (DBMS) and any web frameworks you use, as updates often include security fixes for known vulnerabilities. Strip out potentially harmful characters like ' , -- , or ;

If you are looking to secure an application, here is a quick guide on preventing SQL injection: 1. Use Prepared Statements (Parameterized Queries)