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Question

What was the purpose of adding the call to IsDebuggerPresent API in Defender?

a.

To make it irrelevant

b.

To make it difficult to identify calls from the program into the operating system

c.

To load Defender on older versions of Windows

d.

To simplify the process of determining which API was being called

Posted under Reverse Engineering

Answer: (c).To load Defender on older versions of Windows Explanation:The call to IsDebuggerPresent API was added to load Defender on older versions of Windows as these versions expected all programs to make at least one system call.

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Q. What was the purpose of adding the call to IsDebuggerPresent API in Defender?

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