Balancing Transparency and Privacy

Navigating Third-Party Data in Subject Access Requests
Introduction
Subject Access Requests (SARs) have become a crucial part of data privacy management in today’s digital world. Under the General Data Protection Regulation (GDPR) and similar data protection laws, individuals have the right to request access to the personal data that organisations hold about them. While responding to SARs can be challenging for any organisation, one of the most complex aspects involves handling third-party data. Striking the right balance between transparency and privacy is not just a legal requirement, but also an ethical imperative that can influence trust, reputation, and overall business success.
The Challenge of Third-Party Data in SARs
When processing a SAR, organisations must ensure they provide the requestor with all relevant personal data while not infringing on the privacy rights of other individuals whose data might also appear within the requested records. For example, an email or document might contain personal information about the requestor and a third party, such as a colleague, customer, employee or vendor. This overlap of data rights and responsibilities poses a unique challenge: How can organiations be transparent with the requestor without compromising the privacy of third parties?
Understanding Third-Party Data
Third-party data in the context of SARs typically includes information about other individuals that may be intertwined with the requestor's data. This can occur in various forms, such as:
Emails or Correspondence. Personal data of third parties might appear in email threads or shared communications. Employee Records: HR files often contain references to multiple employees, making it difficult to isolate an individual without impacting others.
Customer Interactions. Customer service logs or transaction histories may include details of multiple individuals and customers.
Shared Documents. Collaborative platforms and shared documents often contain information on multiple contributors.
Given these scenarios, organisations need to adopt strategies that protect the data privacy rights of all parties while fulfilling their obligations under data protection laws.
Balancing Transparency and Privacy Key Strategies

Conduct a Thorough Data Assessment
1. Before responding to any SAR, it is essential to conduct a detailed data assessment. This involves identifying all the documents and records that contain the requestor’s data and determining where third-party data is involved. Understanding the context in which the data appears is vital to making informed decisions about how to handle it.
Organisations should also establish protocols to determine whether the third-party data is relevant to the request or whether it can be excluded or redacted. This step is critical to avoid over-disclosure and to protect the privacy of third parties.
2. Implement Robust Redaction Processes
Redaction is a key tool in balancing transparency and privacy. When third-party data is present, organisations can redact or mask the irrelevant data to ensure they only disclose the information directly related to the requestor. Redaction should be performed carefully and consistently to prevent accidental disclosures (data breaches).
Implementing a standardised redaction policy ensures that all SAR responses are handled uniformly. This policy should include clear guidelines on which types of data can be redacted, the acceptable methods of redaction, a review process to ensure accuracy and prevent re-identification!
3. Leverage Technology for Efficient Data Management
Advanced data management tools and technologies, such as artificial intelligence (AI) and machine learning, can significantly streamline the SAR process. These tools can help automate the identification and categorisation of personal data, flag potential third-party information, and apply redaction techniques more accurately and quickly than manual processes. AI is increasingly being introduced in software and systems, such as email.
Utilising data discovery and classification tools can also improve the organisation’s ability to find all relevant data sets, ensuring comprehensive and compliant SAR responses while minimising the risk of over-disclosure or errors.
4. Consult with Lawyer and Privacy Experts
Given the complexities surrounding third-party data, consulting with lawyer or data protection expert can help ensure that responses are both legally compliant and ethically sound. Legal experts can provide guidance on the interpretation of privacy laws, especially in complex cases where third-party data is heavily intertwined with the requestor's data.
Regular consultations with data protection experts can also help refine internal policies and response strategies, keeping them aligned with evolving legal standards and best practices.
5. Develop Transparent Communication with the Requestor
Open communication with the requestor is vital in managing expectations and explaining why certain data has been withheld or redacted. While it is not necessary to disclose specific details about third parties, providing a general explanation for redactions can help build trust and reduce the likelihood of disputes or complaints to the ICO.
Organisations should develop a standard template or communication strategy for responding to SARs, which includes an explanation of the organisation’s obligations under data protection laws, the rights of third parties, and the steps taken to balance transparency and privacy.
Practical Scenarios and Solutions
To illustrate these strategies in action, consider the following scenarios.
1. Email Threads with Multiple Individuals: An employee submits a SAR requesting all emails they have sent or received. The emails also contain references to other employees. Here, the organisation should redact the names and personal details of other individuals not directly relevant to the SAR request.
2. Shared Documents with Third-Party Data: A customer requests access to their communication history with a customer service department, but the records also mention other customers. In this case, the organisation should redact information about other customers to ensure compliance with data privacy laws.
3. HR Records Containing Third-Party Data: An employee requests access to their HR file, which includes feedback or performance evaluations mentioning other employees. The organisation must carefully review the records and redact any third-party identifiers or irrelevant details.
Conclusion
Navigating the complexities of third-party data in Subject Access Requests requires a careful balancing act between transparency and privacy. By implementing a thorough data assessment process, leveraging technology, maintaining clear communication, and seeking expert advice, organisations can ensure they fulfill their legal obligations while protecting the rights of all individuals involved.
The challenges are significant, but with the right strategies and tools, organisations can manage SARs effectively and maintain trust with both the requestor and any third parties involved.
5 Key Takeaways for Resolving Third-Party Data Issues in SARs

1. Conduct Detailed Data Assessments. Ensure that all relevant data is identified and third-party data is carefully evaluated for relevance to the request.
2. Use Robust Redaction Processes. Implement standardized redaction policies to protect third-party data while disclosing only the necessary information.
3. Leverage Advanced Technologies. Utilize AI, machine learning, and data discovery tools to automate and streamline SAR processes, reducing the risk of errors and non-compliance.
4. Seek Expert Guidance. Regularly consult with legalor data privacy experts to ensure compliance with evolving data protection laws.
5. Maintain Transparent Communication. Clearly explain any redactions or withholdings to the requestor to build trust and reduce the likelihood of disputes.

If all this seems complex or too difficult, remember we can help you at GDPR Compliance Centre. Just get in contact, we are here to help so you can focus on your business operations.