Cyber Security Due Diligence FAQs

Cyber due diligence is the process of assessing the cyber security risks of an organisation before an acquisition, merger or investment. It helps investors understand the target's security maturity, identify hidden risks, estimate potential remediation costs and determine whether cyber issues could affect valuation or integration plans. 

Unlike a traditional IT review, cyber due diligence focuses on identifying risks that could create financial, operational or regulatory exposure after completion. It is also about recognising opportunities to strengthen resilience, create value, and accelerate the success of the acquisition.

Cyber security issues often remain hidden until after a transaction completes. Undiscovered vulnerabilities, historic breaches, poor governance or technical debt can significantly increase costs after acquisition. 

Cyber due diligence helps investors: 

• Identify hidden cyber risks  
• Understand potential financial exposure  
• Support valuation discussions  
• Reduce post-acquisition surprises  
• Prioritise remediation activities  
• Improve integration planning  

It provides decision-makers with greater confidence before investment. 

The scope varies depending on the transaction, but typically includes an assessment of: 

• Security governance and policies  
• Technical security controls  
• Identity and access management  
• Vulnerability management  
• Incident response capability  
• Security monitoring  
• Data protection controls  
• Regulatory compliance  
• Third-party supplier risk  
• Operational resilience  
• Evidence of previous or ongoing compromise  

Toro also validates key technical controls where possible rather than relying solely on questionnaires and interviews.  

The duration depends on the size and complexity of the transaction. 

Smaller acquisitions may be completed within a few days, while larger or more complex organisations may require several weeks. 

Toro works alongside transaction timelines, tailoring the depth of assessment to deliver meaningful findings without creating unnecessary delays to the deal process.   

Not when planned properly. Cyber Due Diligence is designed to support the transaction rather than slow it down. A proportionate assessment helps investors identify the most significant cyber risks within available timescales, allowing informed decisions to be made before completion. 

Early engagement generally reduces delays later in the transaction. 

Common findings include: 

• Unsupported or outdated systems  
• Weak identity and access controls  
• Poor vulnerability management  
• Inadequate monitoring and logging  
• Immature incident response planning  
• Weak third-party risk management 
• Historic security incidents  
• Limited security governance  

Not every finding is deal-breaking, but understanding the business impact helps determine what action should be taken. 

Technical findings are translated into commercial risk by considering factors such as: 

• Vulnerability to compromise 
• Potential operational disruption  
• Regulatory exposure  
• Customer impact  
• Remediation effort  
• Estimated investment required  
• Impact on business continuity  
• This helps investors understand both the current level of risk and the likely cost of improving security after acquisition.  

Yes. Many organisations rely heavily on suppliers, cloud providers and outsourced technology partners. 

Toro assesses critical third parties based on the level of access they have to systems, data and business-critical services. This helps identify risks that may not sit directly within the target organisation but could still affect operations following acquisition.  

In many cases, yes. Where sufficient access is available, technical validation can identify indicators of previous compromise, weaknesses in security controls or evidence that attacks may have occurred. 

While no assessment can guarantee every historic incident will be identified, combining technical evidence with documentation review provides significantly greater confidence than relying solely on management interviews. 

Yes. Many organisations are adopting AI, automation and cloud-based services without fully understanding the associated security, governance and compliance implications. 

Where relevant, Toro extends Cyber Due Diligence to assess: 

• AI adoption across the business  
• Data handling risks  
• Governance arrangements  
• Regulatory considerations  
• Emerging technology exposure  

This provides investors with a clearer understanding of technology-related risks that may influence future investment decisions.  

Cyber Due Diligence should be the start of security improvement rather than the end of the assessment. 

Toro supports organisations after acquisition by helping them: 

• Prioritise remediation activities  
• Improve cyber maturity  
• Strengthen security controls  
• Support integration programmes  
• Build ongoing assurance processes  
• Enhance operational resilience  
• This enables investors and portfolio companies to reduce risk while supporting long-term business growth 

Yes. Cyber Due Diligence is not only about identifying risks that could affect a transaction. It can also uncover opportunities to create value after acquisition. 

The assessment may highlight opportunities to: 

• Accelerate integration with existing technology and security standards 
• Reduce costs or otherwise improve efficiency 
• Improve operational resilience and business continuity 
• Enhance customer and stakeholder confidence 
• Support future growth, compliance and market expansion