Q. What is Defender?

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Q. What is the purpose of running Defender in a Command Prompt window?

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Q. What happens when you enter a bogus username and serial number into Defender?

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Q. Why is it important to know what the failure message looks like when cracking?

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Q. What is the purpose of the Executable Modules window in OllyDbg?

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Q. What is the purpose of examining the thread creation code in Defender's initialization routine?

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Q. What is brute-forcing?

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Q. What does Defender use to generate its decryption key?

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Q. What is the advantage of Defender’s encryption approach?

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Q. What is the encryption algorithm used in Defender?

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Q. Why is it important for protection technologies to encrypt key code?

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Q. What is the main difference between a simple XOR algorithm and CBC?

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Q. Why is it difficult to hide the key from cracker’s eyes in copy protection technologies?

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Q. What does Defender do before each function returns to the caller?

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Q. Why does reencrypting each function create an inconvenience for crackers?

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Q. What is the obfuscated interface in Defender?

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Q. Why does the obfuscated interface make it difficult for crackers to find important code areas in the target program?

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Q. How does the interface attempt to attach to the operating system?

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Q. How does Defender access the operating system after the user-mode components are copied to a random memory address?

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Q. What impact does the obfuscated interface have on the program's memory consumption and performance?

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