This is the #1 defense. It ensures the database treats input as literal text, not executable code.
: This command tells the database to combine the results of the original query with a new, forged query. This is the #1 defense
If you found this in your website logs, email subjects, or contact forms, someone (or more likely an automated bot) is . They are looking for "entry points" where user input isn't properly cleaned before being sent to the database. How to protect your data If you found this in your website logs,
If you are a developer, seeing this is a signal to audit your code immediately. Here are the gold-standard defenses: Here are the gold-standard defenses: Never trust user
Never trust user input. Use allow-lists to ensure only expected data types (like numbers or plain text) are processed.
The text you provided is a classic example of a payload. Specifically, it uses the UNION ALL SELECT statement to attempt to trick a database into revealing unauthorized information or appending malicious data to a legitimate query. What is happening in this string?