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M&A Security Assessment SOP

Sub-procedure for Innovate pillar digital transformation

Overview

This sub-procedure defines the methodology for conducting security due diligence assessments during mergers and acquisitions. It evaluates the target organization's security posture, identifies risks, and provides findings to inform deal decisions and integration planning.

Scope

Pillar: Innovate (Digital Transformation) Service Area: M&A Due Diligence Related Services: Risk Assessment, Security Advisory

Prerequisites

  • M&A transaction announced or in progress
  • NDA executed with target organization
  • Due diligence access granted (data room, interviews)
  • Timeline and deal milestones communicated
  • Key stakeholders identified (both sides)
  • Security assessment scope agreed upon

Procedure

Step 1: Assessment Planning

Objective: Define scope and approach for security due diligence

  1. Scope Definition:
  2. In-scope entities, subsidiaries, and systems
  3. Assessment depth (limited, standard, comprehensive)
  4. Timeline and milestone alignment
  5. Access and interview availability
  6. Risk Focus Areas:
  7. Data protection and privacy
  8. Regulatory compliance
  9. Technical vulnerabilities
  10. Third-party risks
  11. Incident history
  12. Deliverable Requirements:
  13. Report format and timing
  14. Presentation requirements
  15. Red flag notification process
  16. Team Assignment:
  17. Lead assessor
  18. Technical specialists
  19. Compliance specialists

Duration: 1-2 days Owner: M&A Security Lead

Step 2: Documentation Review

Objective: Analyze security documentation in data room

  1. Policies and Procedures:
  2. Information security policy
  3. Acceptable use policy
  4. Incident response plan
  5. Business continuity/DR plan
  6. Access control policy
  7. Compliance Documentation:
  8. Audit reports (SOC 2, ISO 27001, etc.)
  9. Regulatory assessments (HIPAA, PCI, GDPR)
  10. Penetration test reports
  11. Vulnerability assessments
  12. Compliance certifications
  13. Technical Documentation:
  14. Network architecture diagrams
  15. Asset inventories
  16. Data flow diagrams
  17. Vendor/third-party list
  18. Risk Documentation:
  19. Risk register
  20. Incident history
  21. Insurance coverage (cyber liability)
  22. Known security issues

Duration: 2-5 days Owner: Security Analyst

Step 3: Management Interviews

Objective: Assess security culture and practices

  1. Interview Schedule:
  2. CISO/Security Leader
  3. IT Leadership
  4. Compliance/Legal
  5. HR (employee security)
  6. Key business unit leaders
  7. Interview Topics:
  8. Security governance and reporting
  9. Investment in security
  10. Incident response capability
  11. Third-party risk management
  12. Security awareness culture
  13. Known issues and concerns
  14. Red Flag Identification:
  15. Recent breaches or incidents
  16. Regulatory violations
  17. Litigation exposure
  18. Significant security gaps

Duration: 2-3 days Owner: M&A Security Lead

Step 4: Technical Assessment

Objective: Evaluate technical security controls

Based on access level, assess:

  1. Limited Technical Review (documentation only):
  2. Architecture diagram analysis
  3. Security tool inventory review
  4. Configuration documentation review
  5. Standard Technical Review (limited access):
  6. External vulnerability scan
  7. Publicly exposed asset enumeration
  8. DNS and email security analysis
  9. Cloud configuration review (if accessible)
  10. Comprehensive Technical Review (full access):
  11. Internal vulnerability assessment
  12. Security configuration review
  13. Identity and access review
  14. Data protection assessment
  15. Endpoint security evaluation

Duration: 3-10 days (varies by depth) Owner: Security Engineer

Step 5: Risk Quantification

Objective: Quantify security risks for deal consideration

  1. Risk Scoring:
  2. Probability of security incident
  3. Potential financial impact
  4. Regulatory penalty exposure
  5. Reputational risk
  6. Remediation cost estimates
  7. Materiality Assessment:
  8. Deal-breaker issues
  9. Price adjustment considerations
  10. Indemnification requirements
  11. Integration cost impacts
  12. Liability Analysis:
  13. Inherited compliance obligations
  14. Ongoing litigation exposure
  15. Insurance adequacy
  16. Contractual commitments

Duration: 2-3 days Owner: M&A Security Lead

Step 6: Findings Report

Objective: Deliver actionable due diligence findings

  1. Executive Summary:
  2. Overall security posture rating
  3. Critical findings summary
  4. Deal impact assessment
  5. Key recommendations
  6. Detailed Findings:
  7. Findings by domain (governance, technical, compliance)
  8. Evidence and rationale
  9. Risk ratings (Critical/High/Medium/Low)
  10. Remediation complexity
  11. Financial Implications:
  12. Immediate remediation costs
  13. Ongoing security investment needs
  14. Compliance gap closure costs
  15. Potential liability exposure
  16. Recommendations:
  17. Pre-close requirements
  18. Day 1 security actions
  19. 30/60/90 day priorities
  20. Long-term integration considerations

Duration: 2-3 days Owner: M&A Security Lead

Deliverables

Deliverable Format Owner
Assessment Plan Word/PDF M&A Security Lead
Document Review Summary Excel Security Analyst
Interview Notes Word (confidential) M&A Security Lead
Technical Assessment Report Word/PDF Security Engineer
Risk Quantification Excel M&A Security Lead
Security Due Diligence Report Word/PDF (20-40 pages) M&A Security Lead
Executive Presentation PowerPoint M&A Security Lead
Red Flag Memorandum Word (if applicable) M&A Security Lead

Quality Gates

  • Assessment scope aligned with deal timeline
  • All available documentation reviewed
  • Key stakeholder interviews completed
  • Technical assessment completed per scope
  • Critical/High risks quantified
  • Report reviewed by engagement manager
  • Findings presented to deal team
  • Red flags escalated immediately if discovered

Security Due Diligence Domains

Domain Key Questions Risk Indicators
Governance Security leadership? Budget? Board reporting? No CISO, underfunded, no oversight
Policies Comprehensive policies? Enforcement? Missing policies, no enforcement
Compliance Certifications? Audit findings? Failed audits, open findings
Access Control IAM maturity? Privileged access? No MFA, shared accounts
Data Protection Encryption? Classification? DLP? Unencrypted data, no classification
Incident Response Plan? Team? History? No plan, unreported incidents
Third Parties Vendor management? Assessments? No oversight, risky vendors
Technical Vulnerability management? Patching? Old vulnerabilities, poor patching

Red Flag Categories

Category Examples Escalation
Critical Active breach, undisclosed incidents, regulatory violations Immediate to deal team
High Significant compliance gaps, poor incident history Within 24 hours
Medium Security investment gaps, immature processes Include in report
Low Minor policy gaps, improvement opportunities Include in report

Last Updated: February 2026