If the website takes exactly 2 seconds (or more) to load, the attacker knows the database is vulnerable to SQL commands.
sql server - What is this hacker trying to do? - Stack Overflow MEGA'and(select 1)>0waitfor/**/delay'0:0:2
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 the website takes exactly 2 seconds (or
The /**/ is a comment syntax used to bypass simple security filters that might block spaces. How the Attack Works Security Context The /**/ is a comment syntax
: This is the core instruction for the database. It tells the server to pause for exactly 2 seconds before responding.
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 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.
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