Mega'and(select*from(select — Sleep(2))a/**/union/**/select 1)='

: Access entire tables of user info, emails, and hashed passwords.

: These are comment tags used to bypass basic security filters that might block spaces.

: This is the core of the attack.

: This is the most effective defense. It treats all user input as "data" rather than "executable code," so the sleep(2) command is never actually run.

: Only allow expected characters. For example, if a field is for a username, don't allow special characters like ' , ( , or * . : Access entire tables of user info, emails,

: This tells the database to wait for 2 seconds before responding.

Specifically, this is a attempt. The goal of this specific string is to force the server to "sleep" (pause) for a set amount of time, allowing an attacker to confirm if the input is being executed directly by the database. Breakdown of the Payload : This is the most effective defense

: Log in as an administrator without a password.