How Data Minimisation Works Under Nigeria’s NDPA

Understanding the Core Principle of Data Minimisation

Data minimisation is no longer a suggestion for organisations operating in Nigeria; it is a statutory mandate. Under the Nigeria Data Protection Act (NDPA) 2023, data controllers and processors are legally required to ensure that personal data is processed only in a manner that is adequate, relevant, and limited to what is necessary in relation to the purposes for which it is processed. Understanding how data minimisation works under nigerias regulatory framework is essential for avoiding administrative penalties and building trust with data subjects.

When an organisation collects more data than it needs, it increases its risk profile. Every additional data point collected creates a potential target for cyberattacks and increases the burden of data protection responsibilities. By adhering to the principle of data minimisation, businesses can streamline operations while aligning with the requirements set by the Nigeria Data Protection Commission (NDPC).

The Logic Behind Limited Data Collection

Data minimisation is rooted in the belief that personal data is a liability as much as it is an asset. Under the NDPA, you must ask three critical questions before collecting any piece of information:

• Is this information strictly necessary for the intended purpose?
• Can I achieve the same result without this specific data?
• How long do I actually need to keep this data?

If you cannot justify the necessity of the data, collecting it places you in violation of the processing principles. For example, a retail app does not need a user’s home address if it only provides digital services. Collecting that address creates an unnecessary risk of data exposure.

Practical Application and Scenarios

Consider a scenario where a fintech startup in Lagos develops a mobile payment application. To verify a user’s identity, the startup requires a Bank Verification Number (BVN). Under the principle of data minimisation, asking for the user’s religious affiliation or political preference during the same registration process would be a clear violation. These data points have no nexus with the provision of payment services and fail the necessity test.

Reducing Risk Through Compliance

Adopting a ‘privacy by design’ approach is the most effective way to implement data minimisation. By integrating these practices into your compliance roadmap, you reduce the impact of potential data breaches. If a database is breached, the exposure is significantly limited if that database only contains the bare minimum data required to function.

As noted by privacy experts, ‘the less data you store, the less you have to lose when an incident occurs.’ This principle is the bedrock of modern tech-security strategies. Organisations should conduct regular data audits to identify ‘data hoarding’—a common practice where companies keep data ‘just in case’ it might be useful later. Under the NDPA, ‘just in case’ is not a lawful basis for processing.

Checklist for Data Minimisation

Follow this checklist to align your organisation with the NDPA:

• Audit your current data collection forms. Remove all non-essential fields.
• Implement automated data deletion schedules for inactive accounts.
• Ensure that your privacy policy clearly justifies why each piece of data is collected.
• Train your development teams on ‘privacy by design’ to ensure that new features do not trigger excessive data collection.
• Review third-party service providers to ensure they are also adhering to minimisation principles when processing data on your behalf.

Frequently Asked Questions

What if I need the data for a future product update?

The NDPA requires data to be collected for specified, explicit, and legitimate purposes. You cannot collect data based on hypothetical future needs. If a new purpose arises later, you should request that data at that time or obtain separate consent.

Does data minimisation apply to anonymised data?

Anonymised data, where the individual is no longer identifiable, falls outside the scope of the NDPA. However, the process of anonymisation must be robust and irreversible.

Conclusion

Learning how data minimisation works under nigerias NDPA is a fundamental step toward achieving operational excellence and regulatory compliance. By shifting from a culture of ‘collect everything’ to a strategy of ‘collect only what is necessary,’ businesses can improve security, reduce costs, and foster greater consumer confidence. Start your audit today; the NDPC expects a proactive approach to protecting the rights of every Nigerian data subject.