Threats and Additional Threats in Information Security

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Questions and Answers

What is a common threat related to mobile code execution?

  • Object reuse vulnerability
  • Dynamic email risks (correct)
  • JavaScript security
  • Garbage collection in Java

Which type of small programs written in Java are usually subject to a sandbox?

  • Mobile agents
  • Scripting languages
  • Active X controls
  • Java applets (correct)

What is an issue that Java applets are meant to address?

  • Garbage collection in Java
  • Object reuse vulnerability
  • JavaScript security (correct)
  • Dynamic email risks

Which of the following poses a significant risk in emails?

<p>Dynamic email scripts (B)</p> Signup and view all the answers

What type of control is suggested for emails with active scripts or links?

<p>Restrictions on email functions (A)</p> Signup and view all the answers

Which of the following is more likely to be affected by Object reuse vulnerability?

<p>Garbage collection mechanisms (A)</p> Signup and view all the answers

What is a buffer overflow?

<p>A temporary area for data storage where extra data can overwrite other buffers (C)</p> Signup and view all the answers

How can a buffer-overflow attack be exploited by a hacker?

<p>By flooding a memory space reserved for a program (B)</p> Signup and view all the answers

Which type of buffer overflow is more common among attackers?

<p>Stack-based buffer overflows (A)</p> Signup and view all the answers

What is the main difference between stack-based and heap-based buffer overflows?

<p>Stack-based overflows are more difficult to execute (D)</p> Signup and view all the answers

Which type of buffer overflow attack is considered difficult to execute and less common?

<p>Heap-based buffer overflow (C)</p> Signup and view all the answers

In a buffer overflow attack, what does the extra data sometimes contain that could trigger specific actions?

<p>Specific instructions for actions intended by a hacker (C)</p> Signup and view all the answers

What is the purpose of garbage collection in Java?

<p>To efficiently manage memory use (A)</p> Signup and view all the answers

What is a trap door in a program?

<p>A security feature that allows bypassing normal access procedures (A)</p> Signup and view all the answers

Which of the following is a risk associated with incomplete parameter check and enforcement?

<p>Malformed data input can bypass security checks (C)</p> Signup and view all the answers

What is the main concern regarding object reuse vulnerability?

<p>Sensitive residual data exposure (C)</p> Signup and view all the answers

Which type of covert channel communicates by modifying a stored object?

<p>Storage Channels (C)</p> Signup and view all the answers

What precaution should be taken to ensure confidential information is protected from being re-assigned without being cleared?

<p>Erasing information immediately after use (D)</p> Signup and view all the answers

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