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CAS-005 · Question #319

A recent security audit identified multiple endpoints have the following vulnerabilities: - Various unsecured open ports - Active accounts for terminated personnel - Endpoint protection software with

The correct answer is D. Unneeded services disabled E. Patching G. Removal of unused accounts. To mitigate the identified endpoint vulnerabilities, the best actions are disabling unneeded services to close unsecured ports, patching legacy endpoint protection software, and removing unused accounts for terminated personnel.

Submitted by amina.ke· Mar 6, 2026Security Operations

Question

A recent security audit identified multiple endpoints have the following vulnerabilities:

  • Various unsecured open ports
  • Active accounts for terminated personnel
  • Endpoint protection software with legacy versions
  • Overly permissive access rules

Which of the following would best mitigate these risks? (Select three).

Options

  • ALocal drive encryption
  • BSecure boot
  • CAddress space layout randomization
  • DUnneeded services disabled
  • EPatching
  • FLogging
  • GRemoval of unused accounts
  • HEnabling BIOS password

How the community answered

(25 responses)
  • A
    8% (2)
  • C
    16% (4)
  • D
    68% (17)
  • F
    4% (1)
  • H
    4% (1)

Why each option

To mitigate the identified endpoint vulnerabilities, the best actions are disabling unneeded services to close unsecured ports, patching legacy endpoint protection software, and removing unused accounts for terminated personnel.

ALocal drive encryption

Local drive encryption protects data at rest but does not directly mitigate unsecured open ports, active terminated accounts, legacy software, or overly permissive access rules.

BSecure boot

Secure boot ensures that only trusted software loads at startup but does not address runtime issues like open ports, account management, or outdated software versions.

CAddress space layout randomization

Address Space Layout Randomization (ASLR) is a memory protection technique that helps prevent exploit development but does not directly address the specific vulnerabilities listed like open ports or account management.

DUnneeded services disabledCorrect

Disabling unneeded services directly addresses the risk of "various unsecured open ports" by closing potential attack vectors associated with services that are not required for endpoint functionality.

EPatchingCorrect

Patching addresses the risk of "endpoint protection software with legacy versions" by updating to current versions, which include security fixes and improved capabilities, and can also help close known vulnerabilities that might lead to overly permissive access or other issues.

FLogging

Logging is crucial for detection and investigation but is a reactive measure and does not actively mitigate the identified vulnerabilities.

GRemoval of unused accountsCorrect

Removal of unused accounts, especially "active accounts for terminated personnel," directly mitigates the risk of unauthorized access and reduces the attack surface by eliminating dormant user accounts that could be exploited.

HEnabling BIOS password

Enabling a BIOS password secures access to BIOS settings but does not mitigate unsecured open ports, active terminated accounts, legacy software, or overly permissive access rules at the operating system or application level.

Concept tested: Endpoint security, vulnerability remediation, basic security hygiene

Source: https://www.cisecurity.org/cybersecurity-best-practices/cis-controls/v8/implementation-groups/ig1

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