GDPR & IT Compliance: What Your Technology Must Do to Stay Compliant

Since UK GDPR came into force, most business owners are aware that data protection matters and that a breach can mean significant fines. What's less well understood is that GDPR has specific technical requirements - not just policy and paperwork ones - that your IT systems must meet.

This article focuses on the IT side of GDPR compliance: what your technology needs to do, and where most small businesses have gaps.

The Core Technical Principle: "Appropriate Technical Measures"

Article 25 and Article 32 of UK GDPR require organisations to implement "appropriate technical and organisational measures" to protect personal data. The regulation doesn't prescribe exactly what these measures must be - it uses a risk-based approach, where the measures must be proportionate to the risk.

In practice, the ICO and the NCSC both recommend - and the courts and regulators have consistently upheld - that the following technical controls are expected as baseline for any business handling personal data.

1. Encryption

Personal data should be encrypted both at rest (on devices and storage) and in transit (when transmitted over networks).

At rest:

• Laptops and desktops should have full-disk encryption enabled (BitLocker on Windows, FileVault on Mac)
• USB drives used for personal data should be encrypted
• Cloud storage (Microsoft 365, Google Workspace) encrypts at rest by default - but ensure you understand what data is stored where

In transit:

• All web applications should use HTTPS (SSL/TLS)
• Email containing sensitive personal data should be sent via encrypted email or a secure file-sharing portal - not plain email
• Remote desktop access and VPN connections should use strong encryption protocols

Encryption is one of the key mitigating factors in a breach. If a laptop containing personal data is stolen and the drive is encrypted, that is generally not a notifiable breach - because the data cannot be accessed. If the drive is unencrypted, it is.

2. Access Control

Personal data should only be accessible to people who need it for their role. This is the principle of "data minimisation" applied to access - sometimes called least privilege.

Practically, this means:

• User accounts with role-appropriate permissions - not everyone has admin access or access to all files
• Separate admin accounts for IT-level tasks, not used for day-to-day work
• Stale accounts deactivated promptly when staff leave (a surprisingly common gap)
• Multi-factor authentication on accounts that access personal data
• Audit logging - the ability to see who accessed what data and when

Microsoft 365 Business Premium provides a comprehensive access control framework through Azure Active Directory and Intune. If you're on Business Basic or Standard, your access control capabilities are more limited.

3. Backup and Data Recovery

Article 32 of UK GDPR explicitly requires the ability to "restore the availability and access to personal data in a timely manner in the event of a physical or technical incident."

This means a backup that actually works - not just a backup that runs. The ICO has been explicit that a backup strategy must include:

• Regular backups of all personal data
• Tested restore capability
• Documented recovery time and recovery point objectives

See our article on cloud backup vs local backup for detail on what a compliant backup strategy looks like.

4. Breach Detection and Response

UK GDPR requires you to report a personal data breach to the ICO within 72 hours of becoming aware - if the breach is likely to result in risk to individuals' rights and freedoms. This means you need to be able to detect breaches, not just respond to them.

Technical measures that support breach detection include:

• Endpoint Detection and Response (EDR) - monitors device activity for signs of compromise
• Email security monitoring - detects anomalous email behaviour, data exfiltration patterns
• Audit logging in Microsoft 365 - records user activity for post-incident investigation (requires Business Premium or above)
• SIEM or security monitoring - for larger or higher-risk organisations

Many small businesses don't discover a breach until days or weeks after it occurred - sometimes only when a client tells them their data has appeared somewhere it shouldn't. That 72-hour clock starts when you become aware, but the ICO will consider whether you had reasonable detection measures in place.

5. Vendor and Third-Party Management

Under UK GDPR, if you share personal data with a third-party processor (your IT provider, your accountant's cloud software, your CRM provider), you must have a Data Processing Agreement (DPA) in place and ensure they provide "sufficient guarantees" around security.

For your IT provider, this means:

• A signed DPA covering how they process any personal data they access as part of their service
• Evidence of their own security measures (Cyber Essentials, ISO 27001, or equivalent)
• Clarity on where your data is stored geographically (UK/EU for most business scenarios)

CloudHost holds Cyber Essentials certification and stores all client data in UK/EU data centres. We provide DPAs to all managed IT clients as standard.

The Practical Starting Point

If you're not sure whether your current IT setup meets these requirements, the practical starting point is a gap assessment - a review of your current systems against these technical controls.

The good news is that for most small businesses using Microsoft 365 Business Premium, with a managed IT provider who has configured it properly, the majority of these requirements are already met or can be addressed with configuration changes rather than significant new investment.

Book a free IT review with CloudHost and we'll assess your current setup against UK GDPR's technical requirements and give you a clear, prioritised action list.