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.
If you are a developer, you can stop these attacks using three main methods: If a website's search bar or URL parameter
The attacker isn't trying to delete data yet; they are trying to "fingerprint" the database. If a website's search bar or URL parameter
It uses functions like CONCAT and GROUP BY to intentionally trigger a duplicate-key error. The database's error message will then "leak" the information hidden inside the query (in this case, the results of the SELECT 1 or version info) back to the attacker's screen. If a website's search bar or URL parameter