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GCIH · Question #516

Roman Enterprises' network perimeter and internal servers are suspected to have been compromised by an advanced attacker over a period of several weeks. Which of the following should the lead…

The correct answer is B. Voice calls on mobile devices over a third-party carrier network. In this incident, cellular phones on a third-party provider network are the best choice. They are highly unlikely to be compromised by the attacker. Corporate email, instant messages (even digitally signed ones), and the corporate network (by way of the perimeter) have been…

Incident Response & Cyber Kill Chain

Question

Roman Enterprises' network perimeter and internal servers are suspected to have been compromised by an advanced attacker over a period of several weeks. Which of the following should the lead investigator recommend for incident response team communications?

Options

  • AThird-party webmail accessed from the corporate network via reformatted laptops
  • BVoice calls on mobile devices over a third-party carrier network
  • CDigitally signed instant messages over the corporate network
  • DWork email accessed via the web from the incident handlers' personal computers

How the community answered

(49 responses)
  • A
    18% (9)
  • B
    69% (34)
  • C
    4% (2)
  • D
    8% (4)

Explanation

In this incident, cellular phones on a third-party provider network are the best choice. They are highly unlikely to be compromised by the attacker. Corporate email, instant messages (even digitally signed ones), and the corporate network (by way of the perimeter) have been compromised, so messages may be intercepted.

Topics

#out-of-band communications#APT response#secure IR communications#compromised network

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