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CISSP · Question #55

A system has been scanned for vulnerabilities and has been found to contain a number of communication ports that have been opened without authority. To which of the following might this system have be

The correct answer is A. Trojan horse. A trojan horse is a type of malware that masquerades as a legitimate program or file, but performs malicious actions in the background. A trojan horse may open unauthorized ports on the infected system, allowing remote access or communication by the attacker or other malware.

Submitted by rohit_dlh· Mar 5, 2026Asset Security

Question

A system has been scanned for vulnerabilities and has been found to contain a number of communication ports that have been opened without authority. To which of the following might this system have been subjected?

Options

  • ATrojan horse
  • BDenial of Service (DoS)
  • CSpoofing
  • DMan-in-the-Middle (MITM)

How the community answered

(55 responses)
  • A
    89% (49)
  • B
    2% (1)
  • C
    7% (4)
  • D
    2% (1)

Explanation

A trojan horse is a type of malware that masquerades as a legitimate program or file, but performs malicious actions in the background. A trojan horse may open unauthorized ports on the infected system, allowing remote access or communication by the attacker or other malware.

Topics

#Trojan horse#backdoor#vulnerability scan#malware

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