What is cyber due diligence in private equity?

Cyber due diligence in private equity is a structured assessment of a target company's security posture, governance maturity, compliance obligations, and cyber risk exposure, conducted as part of the pre-acquisition diligence process. It identifies security debt, regulatory gaps, and material risks that could affect deal value, integration complexity, or post-close liability, before the transaction completes.

When should PE firms conduct cyber security due diligence?

Cyber security due diligence should be conducted at the same stage as financial and legal due diligence, before deal close. The window between exclusivity and completion is typically the right time. Waiting until after acquisition means inheriting risks without the ability to price them, renegotiate terms, or implement protective measures before they become the sponsor's liability.

What are the main cyber security risks in M&A transactions?

The principal cyber risks in M&A include inherited security debt not visible in financial statements, undisclosed or unresolved incidents, compliance gaps that trigger regulatory action post-close, integration vulnerabilities created by connecting two distinct technology environments, and the operational disruption that bad actors specifically target during transition periods. PE-backed businesses are also subject to heightened governance expectations from sponsors preparing for exit.

Private Equity Cybersecurity Advisory

Cyber due diligence and portfolio security advisory for private equity

Pre-acquisition cyber security assessment, M&A integration security, and portfolio company transformation for private equity firms and their advisors. Advisory that comes from having sat on the other side of the table, appointed by Advent International to lead group-wide cybersecurity transformation across the Planet Payment portfolio.

The PE Cyber Security Challenge

Cyber security risk in private equity is structurally different

Private equity acquisitions move fast. Security due diligence is often compressed, inherited technology stacks are complex and poorly documented, and the window between deal close and value creation is narrow. The cyber security risks embedded in a target business, legacy infrastructure, compliance gaps, unresolved incidents, inadequate governance, can materially affect value, and they rarely surface until after close.

Post-acquisition, the challenge shifts to integration and transformation: rationalising security across multiple inherited environments, meeting the governance expectations of the PE sponsor, and building the security foundations that the business needs to scale, list, or be sold.

I provide the senior cyber security advisory that PE firms, their portfolio companies, and their advisors require at each of these stages, not as a generalist consultant, but as someone who has led this work directly, from inside.

"Appointed by Advent International to assess, design and lead security transformation across the newly consolidated Planet Group, spanning global payment processing, hospitality technology and tax refund businesses across multiple geographies."

Why PE cyber risk is underpriced at diligence

Security debt in target businesses is rarely visible in financial statements

Inherited compliance gaps can trigger regulatory action post-close

M&A integration creates transient security vulnerabilities that bad actors exploit

PE sponsor governance expectations are rising, boards are increasingly accountable

Cyber incidents during hold period can directly impair exit valuation

PE Advisory Services

Senior cyber security support across the investment lifecycle

Pre-Acquisition Cyber Due Diligence

Rapid, senior-led assessment of a target business's security posture, governance maturity, compliance obligations and unresolved risk. Structured to inform deal decisions, not just document findings. Delivered to timelines that reflect the reality of deal processes.

Post-Merger Security Integration

Security architecture rationalisation, integration risk management and governance alignment across combined entities. Managing the transient vulnerabilities created by integration activity and establishing a coherent security baseline across the merged business.

PortCo Security Transformation

Designing and leading the security transformation programme that takes a portfolio company from its inherited baseline to a governance and control standard appropriate for its regulatory obligations, investor expectations, and strategic trajectory, whether that means a trade sale, IPO, or further acquisition.

Carve-Out Security Architecture

Security design and governance for carve-out transactions, where a business or division is being separated from a parent organisation. Establishing standalone security capability, managing transitional services risk, and ensuring the carved-out entity has a defensible security posture from day one.

First-Hand PE Experience

Appointed by a global PE firm to lead portfolio security transformation

At Planet Payment, I was onboarded directly by Advent International, one of the world's largest private equity firms, as Group CISO, tasked with assessing, designing and leading security transformation across the newly consolidated Planet Group. The mandate spanned pre-acquisition security due diligence, post-merger integration, and PortCo-level programme delivery across a global business with operations in payments, hospitality technology, and tax refund services.

The security baseline was complex: multiple inherited technology stacks, diverse regulatory obligations across jurisdictions, and the heightened governance expectations of a PE sponsor preparing the business for its next phase of growth. I developed the transformation roadmap that gave Advent International and Group management a clear, credible and prioritised path to enterprise-grade security governance.

That experience, working directly to a PE sponsor, navigating acquisition integration, and building security capability under real commercial pressure, informs every private equity engagement I take.

Pre-Acquisition Assessment

Reviewed and risk-assessed overall security maturity across the newly formed Planet Group spanning multiple inherited acquisitions.

Multi-Jurisdiction Compliance

Navigated diverse regulatory obligations across geographies, PCI-DSS, data protection frameworks, payment industry standards.

Sponsor Reporting

Reported directly to Advent International Partner and Group CIO/CRO, delivering board-level security leadership at a critical moment of transformation.

Transformation Roadmap

Developed a comprehensive, prioritised security transformation roadmap addressing the most material risks across the combined organisation.

Cyber due diligence or portfolio security advisory?

Describe the transaction, the portfolio company, or the challenge you are working through. I will tell you directly whether and how I can help.

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