If you are seeing this in your web server logs, it means someone—or an automated scanner—is probing your site for security weaknesses. Developers typically prevent these attacks using or prepared statements , which ensure that user input is never executed as code.
: This is the core instruction for the database. It tells the server to pause for exactly 2 seconds before responding.
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. MEGA'and(select 1)>0waitfor/**/delay'0:0:2
If the website takes exactly 2 seconds (or more) to load, the attacker knows the database is vulnerable to SQL commands.
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 If you are seeing this in your web
: 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.
: 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. It tells the server to pause for exactly
sql server - What is this hacker trying to do? - Stack Overflow