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 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
: 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. If you are seeing this in your web
If the website takes exactly 2 seconds (or more) to load, the attacker knows the database is vulnerable to SQL commands. Instead, the attacker observes the of the website: