{keyword}') Union All Select Null,null,null,null,null,null,null-- Hofz Page

If you found this in your website's logs, it means someone (or an automated bot) was . It is a common sign of a "SQLi" attack. To protect your application, you should:

: Ensure all data entered by users is cleaned and validated before it hits your database.

: This part attempts to "break out" of a standard SQL query. It uses a closing quote and parenthesis to terminate whatever the original developer intended the query to do. If you found this in your website's logs,

: The attacker uses NULL values to figure out how many columns are in the original database table. If the number of NULL s doesn't match the number of columns in the original query, the database will return an error.

Are you seeing this in your , or are you testing the security of your own code ? : This part attempts to "break out" of a standard SQL query

: This is the core of the attack. It tells the database to combine the results of the legitimate query with the results of a new, malicious one.

: A WAF can often block these types of patterned attacks automatically. If the number of NULL s doesn't match

: This is likely a "canary" or a unique identifier used by automated security scanners to confirm if the injection was successful. What should you do?