Secure Post-Merger Integration

The value of an acquisition or merger is rarely decided at signing. It is decided in the integration. When two organisations become one, so do two sets of systems, access regimes, governance models and security cultures. Unclear ownership, duplicated controls and temporary fixes that quietly become permanent are among the most common sources of increased risk and cost after a transaction.

Berigo helps owners, boards and executive teams plan and execute secure integration following acquisitions, mergers and carve-outs. We treat security as a management discipline, not a technical side project: the objective is a combined organisation with clear accountability, working controls and documented compliance from day one, an integration that strengthens the security posture rather than eroding it.

What we deliver

• Day-1 readiness: a plan for access, critical systems, reporting lines and accountability from the day of completion, so operations remain protected while integration proceeds.
• ISMS consolidation: harmonising policies, roles, risk processes and controls into a single working management system, with ISO/IEC 27001 as the frame of reference where relevant.
• Identity and access management: cleaning up privileges and access across both organisations, applying the principle of least privilege.
• Regulatory continuity: assessing how obligations under NIS2 and the GDPR are affected by the transaction, so responsibilities, agreements and reporting duties do not fall through the cracks.
• A risk-driven integration plan: a prioritised sequence for combining systems and processes, with criticality and business dependencies setting the pace.
• Incident readiness through the transition: joint incident response and escalation arrangements that work before, during and after the merger.
• Board and owner reporting: status, risk and decision support in language decision-makers can act on.

Who this is for

The service is designed for acquirers, investors, boards and executive teams integrating a business after an acquisition or merger, and for companies carving out part of their operations that must establish standalone security governance. It is particularly relevant where one or both parties fall within the scope of NIS2, process personal data at scale, or hold certifications that must be maintained through the transaction.

How an engagement typically starts

An engagement normally begins with a confidential conversation about the transaction, the timeline and what is already known, for example, findings from a security due diligence. We then map the security governance of both parties, identify the most critical gaps and establish a prioritised integration plan anchored with leadership. Contact us for a no-obligation conversation about how we can support your transaction.