Domestic outsourcing may carry slightly fewer cyber risks because data stays within the same legal and regulatory environment. With overseas outsourcing, the same cyber hygiene principles apply, but you must layer on extra controls: strong encryption, strict contracts, verified technical measures, and detailed breach/response procedures.

Legal and regulatory oversight

Overseas providers may be subject to foreign government access or weaker data protection regimes - so stronger technical safeguards and transfer agreements are needed. 

Data transfer, transmission and access

Cross-border data transfers inherently increase risk (interception, routing through multiple jurisdictions) so encrypted transfers (eg. TLS, VPN, SFTP) are mandatory. You must also consider UK GDPR transfer mechanisms (see the data protection section).

Where UK data is accessed remotely from an overseas outsourcing provider, it still constitutes a restricted transfer under UK GDPR – see the data protection section for more information on the implications. You also still have the GDPR requirements of a lawful basis for processing, a Data Processing Agreement (DPA), appropriate Technical and Organisational Measures (TOMs), and oversight and monitoring of the outsourcing provider. However, from a cyber security angle, the focus shifts from storage risks to remote access security and controlling what overseas staff can do once inside your systems:

  • Real-time access controls become more critical.
  • Access security is the main risk so ensure strong authentication (multi-factor authentication and VPN. Limit access to what's strictly necessary (principle of least privilege). Explicitly prohibit unauthorised sub-processing in your Data Processing Agreement, and demand visibility over supply chains.
  • On the incident response front, breach management is still your responsibility, but you may detect incidents faster since the data is in your own environment. Breach notification by the overseas outsourcing provider may be delayed by time zones, legal conflicts, or lack of familiarity with UK requirements. Contracts should mandate breach notification within tight timeframes, regardless of local laws. 
  • There is jurisdictional risk - overseas staff may still be subject to local laws that could compel them to disclose or copy data. You can mitigate this with strong contractual commitments and technical measures (eg. disabling copy/download, watermarks, screen monitoring in sensitive cases).

Technical measures

  • Require encryption in transit (TLS, SFTP, VPN) for any data transfers.
  • Ensure encryption at rest for any data on the provider's servers/cloud.
  • Use multi-factor authentication (MFA) for system access.
  • Confirm role-based access controls - no unnecessary staff access.
  • Require audit logging and monitoring of access/activity.
  • Where data is transferred to the outsourcing provider, confirm secure data deletion procedures when data is no longer needed.
  • Verify regular patching, malware protection, and penetration testing.
  • Ensure secure backup and disaster recovery processes are in place.

You may need to demand evidence of these controls more rigorously, eg. certifications (ISO 27001, SOC 2).

Organisational measures

Training standards with overseas outsourcing providers may vary. Many UK practices give their outsourced staff the same cyber training as their UK team which is a great approach to ensure consistency in response and keeping up to date. However, if you do not want to take this approach then make sure there are strong contractual requirements for training. 

  • Check that the provider has ISO 27001, SOC 2, or equivalent certification.
  • Confirm that staff confidentiality agreements are signed.
  • Verify data protection and security training is given to staff handling your data.
  • Require a breach response plan with 24/7 reporting and clear SLAs.
  • Ensure incident notification aligns with UK GDPR (within 72 hours).
  • Restrict or prohibit unauthorised sub-processing; require approval for any sub-contractors.
  • Conduct regular audits/reviews of the provider's security practices.

Ongoing Monitoring

  • Periodically review provider's TOMs (technical & organisational measures). 
  • Require evidence of compliance (e.g. audit reports, certificates, penetration test results).
  • Document your oversight activities in case of ICO investigation.