Mega'and(select*from(select Sleep(0))a/**/union/**/select 1)=' [ 480p ]

: This is a way to combine the results of two different database queries into one, often used to extract hidden information.

Common and how developers prevent them?

: These are "comments" in code, used here to bypass simple security filters that might block spaces. Security and MEGA : This is a way to combine the

Tips for creating and using two-factor authentication? : This is a way to combine the

The characters following the word "MEGA" represent a common pattern used in database security audits: : This is a way to combine the