100-140 Question 332
Select 3A user reports that their computer is displaying unusual pop-ups and behaving erratically after downloading a free software tool from the internet. Upon investigation, you find the tool was downloaded from a website not recognized as a trusted source. What steps should you take to address the issue and secure the system?
- A
Run a full malware scan on the system using an updated antivirus program.
- B
Reinstall the operating system immediately to remove any potential threats.
- C
Educate the user about the risks of downloading software from untrusted sources.
- D
Disable the firewall temporarily to investigate the issue further.
- E
Verify the source of the download and check the software's digital signature, if available.
Show answer and explanation
Correct answers: A, C, E
Explanation
When dealing with issues caused by software from untrusted sources, it is important to identify and remove potential malware, educate the user to prevent future incidents, and verify software authenticity. A full malware scan helps detect threats, user education reduces the likelihood of recurring problems, and verifying the software's source ensures its legitimacy. Reinstalling the operating system is a last resort, and disabling security measures like the firewall can increase exposure to threats.
- A. Correct.
Running a full malware scan is a critical first step to identify and remove any malicious programs that may have been installed as a result of downloading from an untrusted source.
- B. Incorrect.
Reinstalling the operating system is an extreme measure and should only be considered if all other remediation steps fail. It is not the first step in handling this scenario.
- C. Correct.
Educating the user about the risks of downloading software from untrusted sources is essential to prevent similar incidents in the future.
- D. Incorrect.
Disabling the firewall is not a recommended action as it can expose the system to further threats. Instead, security measures should be strengthened.
- E. Correct.
Verifying the source of the download and checking the software's digital signature, if available, can help determine whether the software has been tampered with or if it is legitimate.