The string you provided is designed to trick a database into executing a command by appending it to a legitimate search term ( KEYWORD ). It uses the SELECT CASE statement to test if a condition (like 9298=9298 ) is true, which helps an attacker confirm that the database is vulnerable [2, 3]. 2. Primary Defense: Prepared Statements
Never trust user input. Use an "allow-list" approach to ensure that a keyword only contains expected characters (like alphanumeric characters) and reject anything containing keywords like SELECT , FROM , or special symbols like -- and || [5]. 4. Use Web Application Firewalls (WAF) The string you provided is designed to trick
A WAF can automatically detect and block common SQL injection patterns (like CHR codes and XMLType calls) before they even reach your server [6]. Use Web Application Firewalls (WAF) A WAF can
The most effective way to stop this is to use (Prepared Statements). Instead of building a query string with user input, you use placeholders. not as executable code) [4
"SELECT * FROM products WHERE name = ?" (The database treats the input strictly as text, not as executable code) [4, 5]. 3. Implement Input Validation
"SELECT * FROM products WHERE name = '" + userInput + "'"