Qoyo: {keyword} And 5161=2181--

If the page loads normally (the same as the original, legitimate query), it tells the attacker that the query is being evaluated, but the AND False didn't change the outcome.

: This is a SQL comment marker (in MySQL, PostgreSQL, etc.). It instructs the database engine to ignore everything that follows it in the query. {KEYWORD} AND 5161=2181-- qoyo

This is a basic attempt to see if security measures are in place. If the page loads normally (the same as

If you are running a , a bug bounty program , or testing your own code , I can provide specific examples of: How to prevent this using prepared statements. What to look for in a WAF (Web Application Firewall) log. a bug bounty program