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D2: Information Security Risk Management

CISM (ISACA) study guide

Domain 2 (20% weight) covers identifying, analyzing, and treating information security risk within the broader context of enterprise risk management. It overlaps conceptually with CISSP Domain 1's risk content but is tested from a program-management lens: less "what is SLE" and more "how does the security risk function integrate with and report to enterprise risk management."

Key Concepts
  • Risk appetite vs. risk tolerance

    Risk appetite is the amount of risk an organization is willing to accept in pursuit of its objectives (strategic, board-set). Risk tolerance is the acceptable variation around that appetite for a specific risk or metric (operational, more granular).

  • Risk register

    The living inventory of identified risks, their assessed likelihood/impact, ownership, and treatment status: a core artifact CISM expects a security manager to maintain and report from, not just a theoretical concept.

  • Risk treatment options

    The same four options as CISSP (avoid, mitigate, transfer, accept), but CISM emphasizes the business decision-making process and required sign-off/ownership behind each choice, not just defining the terms.

  • Emerging risk and threat landscape monitoring

    CISM expects an ongoing, proactive process for identifying new and evolving risks (e.g., new technology adoption, threat intelligence, regulatory change), not just periodic point-in-time risk assessments.

Confusable Pairs
  • Risk appetite vs. risk tolerance (again)

    Appetite is the board-level strategic "how much risk overall." Tolerance is the operational-level "how much variance around a specific target is acceptable." Exam questions often describe a scenario and ask which term applies.

  • Inherent risk vs. residual risk

    Inherent risk is the risk level before any controls are applied. Residual risk is what remains after controls are in place: the number that should be compared against risk appetite when deciding if further treatment is needed.

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