{keyword} And (select 8148 From(select Count(*),concat(0x7162717671,(select (elt(8148=8148,1))),0x7171627171,floor(rand(0)*2))x From Information_schema.character_sets Group By X)a)-- Qkgc -

If you are a developer, you can stop these attacks using three main methods:

The attacker isn't trying to delete data yet; they are trying to "fingerprint" the database.

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

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.

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. If a website's search bar or URL parameter

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 .

like usernames, hashed passwords, or emails. How to Prevent It If a user is searching for a "Keyword,"

This is the gold standard. Instead of building a query string with user input, you use placeholders ( ? ). The database treats the input strictly as data, never as executable code.