: If a site responds to this string, it means it is not "sanitizing" user input, leaving it open to a full-scale data breach.
: This is a logical operator used to join two conditions. {KEYWORD} AND 4477=4477
SELECT * FROM products WHERE category = '{KEYWORD} AND 4477=4477'; : If a site responds to this string,
: Automated tools often use specific numbers like 4477 to "fingerprint" a site and see how it responds to logical tests. {KEYWORD} AND 4477=4477