Use "Prepared Statements" so the database treats the input as literal text, not executable code [7].
: This is an obfuscated way of writing the string "lbtV." Attackers use CHR() codes to bypass simple security filters that look for specific words [5]. ,5 : This tells the database to wait for 5 seconds [2]. Use "Prepared Statements" so the database treats the
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 The goal of this specific "Sleep" command isn't
: This is likely a placeholder where a legitimate search term or data value would normally go. How to Protect Your System : This is
: DUAL is a special one-row table in Oracle used to execute functions that don't need data from a specific table [6].
Use "allow-lists" to ensure only expected characters (like letters and numbers) are accepted [7].