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

: 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].

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 : This is an obfuscated way of writing the string "lbtV

: This comments out the rest of the original query so the database doesn't throw a syntax error when it tries to run the attacker's injected code [3]. The Goal of the Attack If the application takes exactly 5 seconds longer

: DUAL is a special one-row table in Oracle used to execute functions that don't need data from a specific table [6]. The Goal of the Attack : DUAL is