{keyword} And 5161=2181--: Qoyo

: A junk string used as a filler to complete the SQL syntax structure. Purpose of this Payload

This is a basic attempt to see if security measures are in place. {KEYWORD} AND 5161=2181-- qoyo

: This is a SQL comment marker (in MySQL, PostgreSQL, etc.). It instructs the database engine to ignore everything that follows it in the query. : A junk string used as a filler

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. It instructs the database engine to ignore everything

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.