Mega'and(select 1)>0waitfor/**/delay'0:0:2 — Plus

This technique is called "blind" because the database doesn't return actual data or error messages to the attacker's screen. Instead, the attacker observes the of the website: The attacker sends the request.

: This likely targets a field in a web application where the input "MEGA" is expected. The trailing single quote ( ' ) is intended to "break out" of the application's intended SQL query. MEGA'and(select 1)>0waitfor/**/delay'0:0:2

: This is a logical condition that is always true. In a blind injection attack, hackers use such conditions to determine if their injected code is being executed. This technique is called "blind" because the database

Once confirmed, they can use more complex versions of this command to ask the database "yes/no" questions to slowly extract usernames, passwords, or other sensitive data. Security Context The trailing single quote ( ' ) is

: This is the core instruction for the database. It tells the server to pause for exactly 2 seconds before responding.

sql server - What is this hacker trying to do? - Stack Overflow

The string you provided is a specific type of cyberattack payload used to test for vulnerabilities. Specifically, it targets Microsoft SQL Server (MSSQL) databases. Breakdown of the Code