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Vendor Management

How to Manage Third Party Data Processors

Establishing accountability and oversight for outsourced data processing

18 min read
Updated 6 January 2025

Executive Summary

Engaging third parties to process personal data does not transfer accountability. The Data Fiduciary remains responsible for ensuring appropriate protection regardless of who performs the processing. This guide addresses how to select, contract with, and oversee data processors to maintain compliance.

Key Takeaways

  • 1
    Conduct due diligence before engaging any processor handling personal data
  • 2
    Implement data processing agreements with mandatory provisions
  • 3
    Establish ongoing oversight mechanisms proportionate to processing risk
  • 4
    Plan for processor transitions including data return and deletion
  • 5
    Maintain documentation supporting the accountability chain

1Understanding the Fiduciary-Processor Relationship

Under DPDPA, the Data Fiduciary determines purposes and means of processing while processors act on the fiduciary's behalf. This creates a principal-agent relationship where the fiduciary retains accountability for processor activities. Processor failures can result in fiduciary liability.

2Pre-Engagement Due Diligence

Before engaging a processor, assess their capability to handle personal data appropriately.

1

Security Assessment

Evaluate the processor's security posture through questionnaires, certifications, audit reports, or on-site assessments as appropriate to the risk level.

2

Compliance Capability

Assess whether the processor understands and can comply with DPDPA requirements. Request evidence of their compliance programme.

3

Technical Capability

Verify that the processor has technical capabilities to fulfil data protection requirements including access requests, deletion, and breach notification.

4

Financial Stability

Consider the processor's financial stability. A processor that fails financially may not be able to maintain data protection or facilitate orderly transition.

5

Reference Checks

Seek references from other customers regarding the processor's data protection performance.

Practical Tips

  • Proportionality applies: a major cloud provider processing sensitive data warrants more diligence than a small contractor with limited access
  • Industry certifications like ISO 27001 provide evidence but do not substitute for specific due diligence

3Data Processing Agreements

Formal agreements establish processor obligations and fiduciary rights.

1

Processing Scope

Clearly define what processing the processor is authorised to perform, including data categories, purposes, and duration.

2

Security Requirements

Specify security measures the processor must implement. Reference specific standards or controls rather than vague best efforts.

3

Subprocessor Controls

Address whether the processor may engage subprocessors, under what conditions, and with what notice requirements.

4

Assistance Obligations

Require the processor to assist with Data Principal requests, audits, breach response, and impact assessments.

5

Breach Notification

Mandate prompt notification of any personal data breach, specifying timelines and information to be provided.

6

Audit Rights

Reserve the right to audit processor compliance, either directly or through independent auditors.

7

Termination and Transition

Address data return or deletion upon termination, transition assistance, and post-termination obligations.

4Ongoing Oversight

The relationship does not end with contract signing. Ongoing oversight ensures continued compliance.

1

Periodic Assessments

Conduct regular assessments of processor compliance. The frequency and depth should reflect processing risk.

2

Certification Monitoring

If relying on certifications, monitor their currency. Expired or revoked certifications may indicate compliance problems.

3

Incident Review

Review any incidents involving the processor, even those that did not result in breach. Patterns may indicate systemic issues.

4

Performance Metrics

Track processor performance on data protection obligations such as request response times and security metrics.

5

Change Monitoring

Stay informed of significant changes in processor operations, ownership, or subprocessor relationships that might affect risk.

5Managing Subprocessors

Many processors engage their own subprocessors, creating extended processing chains.

1

Visibility

Require processors to disclose subprocessors and maintain current lists. You cannot assess what you cannot see.

2

Flow-Down Requirements

Ensure processor agreements require subprocessors to be bound by equivalent obligations.

3

Change Notification

Require advance notice of new or changed subprocessors, with opportunity to object.

4

Subprocessor Assessment

For significant subprocessors, consider conducting direct assessment or requiring processors to share their diligence results.

6Handling Processor Transitions

Changing processors requires careful planning to protect data throughout the transition.

1

Transition Planning

Develop detailed plans for data migration, including timelines, responsibilities, and verification procedures.

2

Data Extraction

Extract data from the outgoing processor in usable formats. Verify completeness and integrity.

3

Migration Execution

Transfer data to the new processor using secure methods. Minimise the window of parallel processing.

4

Data Deletion

Require the outgoing processor to delete all personal data after successful migration. Obtain certification of deletion.

5

Contractual Wind-Down

Manage contract termination according to terms, addressing any ongoing obligations such as confidentiality.

7Documentation

Maintain comprehensive records of processor relationships and oversight activities.

1

Processor Inventory

Maintain current lists of all processors, the data they process, and relevant contract details.

2

Due Diligence Records

Preserve evidence of due diligence conducted before and during engagements.

3

Contracts and Amendments

Maintain executed agreements and any modifications.

4

Oversight Records

Document oversight activities including assessments, audit findings, and issue resolution.

Frequently Asked Questions

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