If a website's search bar or URL parameter isn't properly "sanitized," an attacker can use this method to: (e.g., MySQL, PostgreSQL). Extract table names and column structures.
like usernames, hashed passwords, or emails. How to Prevent It If a website's search bar or URL parameter
It looks like your query contains some SQL injection syntax ( SELECT COUNT , CONCAT , INFORMATION_SCHEMA ). If you're looking for an on how these types of database queries work—specifically regarding web security and SQL injection (SQLi) —I can certainly help with that. What is this code? How to Prevent It It looks like your
Ensure your database user account only has the permissions it absolutely needs. For example, a "read-only" web user shouldn't be allowed to access INFORMATION_SCHEMA . Ensure your database user account only has the
Only allow the types of characters you expect. If a user is searching for a "Keyword," they probably don't need to use parentheses or semicolons.
These are hexadecimal representations of characters (like 'qbqvq') used as delimiters so the attacker can easily spot their "stolen" data in the middle of a messy error message. Why is it dangerous?
If you are a developer, you can stop these attacks using three main methods:
