nerdexam
IsacaIsaca

CISM · Question #855

CISM Question #855: Real Exam Question with Answer & Explanation

The correct answer is C: Insufficient data separation. Public cloud environments are multi-tenant by nature, meaning multiple organizations share the same underlying physical infrastructure. Insufficient data separation (logical isolation) is the greatest concern because it creates the risk that one tenant's sensitive data could be a

Submitted by dimitri_ru· Apr 18, 2026Information Security Risk Management

Question

Which of the following is the GREATEST concern when an organization migrates sensitive systems to a public cloud service?

Options

  • ALack of logging capabilities
  • BWeak authentication
  • CInsufficient data separation
  • DInsufficient user knowledge

Explanation

Public cloud environments are multi-tenant by nature, meaning multiple organizations share the same underlying physical infrastructure. Insufficient data separation (logical isolation) is the greatest concern because it creates the risk that one tenant's sensitive data could be accessed by or leak to another tenant. This risk is unique and inherent to the shared-resource model of public cloud. While weak authentication and lack of logging are valid concerns, they are not specific to cloud migration and can be addressed with standard controls. Insufficient user knowledge is an operational concern but not a structural risk of the cloud model itself.

Topics

#Cloud Security#Data Separation#Multi-tenancy#Risk Identification

Community Discussion

No community discussion yet for this question.

Full CISM PracticeBrowse All CISM Questions