Security Risk Justification Memo¶

Category: Legal-Technical Analysis

Purpose¶

Justifies a risk acceptance, mitigation approach, or residual risk position for legal, audit, or leadership. Documents the rationale and evidence so the decision is defensible.

Audience¶

Legal, compliance, audit, and leadership. Decision-makers who need clear rationale and accountability.

Typical structure¶

• Decision summary — What is being accepted, mitigated, or deferred.
• Context — Risk, control, or finding in question.
• Options considered — Alternatives (remediate, accept, transfer, avoid).
• Analysis — Impact, likelihood, cost, and timeline of options.
• Recommendation — Chosen path and rationale.
• Evidence — Risk assessment, control evidence, or third-party input.
• Approval and review — Who approved; next review date.

When to use¶

• Formal risk acceptance (e.g., deferred remediation).
• Responding to audit finding with a documented position.
• Documenting why a control or mitigation is sufficient for legal/regulatory purposes.

Evidence linkage¶

Memo should reference risk register, assessment output, and control evidence. Creates an audit trail for risk decisions.