Dual-- - {keyword};select Dbms_pipe.receive_message(chr(108)||chr(98)||chr(116)||chr(86),5) From

: This is used to terminate the original SQL statement and begin a new, unauthorized command [3].

Use "allow-lists" to ensure only expected characters (like letters and numbers) are accepted [7]. : This is used to terminate the original

Use "Prepared Statements" so the database treats the input as literal text, not executable code [7]. The goal of this specific "Sleep" command isn't

The goal of this specific "Sleep" command isn't to steal data immediately, but to . If the application takes exactly 5 seconds longer than usual to respond when this string is entered, the attacker knows the database is vulnerable to SQL injection [2]. Once confirmed, they can use similar time-based techniques to extract sensitive data one character at a time. How to Protect Your System How to Protect Your System It looks like

It looks like you've shared a snippet of code designed for an attack, specifically a time-based blind injection [1, 2]. Technical Breakdown

Ensure your database user account does not have permission to execute sensitive packages like DBMS_PIPE unless absolutely necessary [8].

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