What the Cyber Security & Resilience Bill Means for Microsoft Partners

The recent IAMCP UK&I session held last March 16 explored one of the most important upcoming regulatory changes for the UK cyber landscape: the Cyber Security & Resilience Bill (CSRB).

Led by Philip Ridley, Director of Cyber Risk Management at CyberOne, the session unpacked what the bill is, who it impacts and what Microsoft partners need to do next.

Here are the key takeaways.

What Is the Cyber Security & Resilience Bill?

The Cyber Security & Resilience Bill builds on the existing Network and Information Systems (NIS) Regulations introduced in 2018, which were designed to improve the security of essential and digital services.

The CSRB represents the next evolution.

It introduces:

• Enhanced regulatory powers for monitoring and enforcement
• A significantly expanded scope of organisations
• Stricter and faster incident reporting requirements
• Greater focus on supply chain security
  

It is important to note that the bill is still progressing through Parliament and is not yet finalised, meaning some requirements may still change.

More Organisations Affected

One of the biggest shifts discussed in the session is the expansion of scope.

The CSRB will apply to:

• Operators of essential services such as energy, transport, health and water
• Digital infrastructure providers including data centres and cloud services
• Managed Service Providers and Managed Security Service Providers
• Critical suppliers supporting essential services
• Digital service providers such as online marketplaces and search engines

This means many organisations that were previously outside regulatory requirements may now fall within scope.

Alignment With NIS2

The session also highlighted alignment with the EU’s NIS2 directive.

Key similarities include:

• Expanded scope into supply chains and service providers
• Stricter incident reporting timelines
• Stronger enforcement approaches

However, the UK approach is expected to be more flexible and proportionate, compared to the more prescriptive nature of NIS2.

Faster and More Structured Incident Reporting

A major operational change comes in the form of incident reporting requirements.

The proposed model includes:

• An initial notification within 24 hours of becoming aware of a significant incident
• A more detailed report within 72 hours

As Phil Ridley highlighted during the session:

“This isn’t just about reporting faster. It’s about having the visibility, processes and capability in place to even know you’ve had an incident within that timeframe.”

The proposed regulation introduces a two-stage reporting process that will require organisations to improve visibility, detection and response capabilities.

Supply Chain Risk Takes Centre Stage

A key theme throughout the webinar was the increased focus on supply chain security.

The concept of a “Designated Critical Supplier” was introduced, where certain suppliers may be formally regulated due to their role in supporting essential services.

This has several implications:

• Mandatory minimum security standards for suppliers
• Stronger contractual requirements, including audit rights
• More frequent and formal assurance activities
• A shift towards continuous monitoring rather than periodic reviews

For organisations and partners alike, this means supply chain security becomes a core part of compliance, not a secondary consideration.

The Role of the NCSC Cyber Assessment Framework (CAF)

The Cyber Assessment Framework (CAF) from the National Cyber Security Centre will play a central role in how organisations are assessed.

CAF focuses on outcomes rather than checklists and includes:

• Four high-level objectives
• Fourteen supporting principles
• Alignment with existing standards such as ISO27001 and NIST

Organisations will need to demonstrate that they meet these outcomes to satisfy regulatory expectations.

What This Means for Microsoft Partners

The session outlined several key areas where Microsoft partners will play a critical role.

Supporting Expanded Scope Requirements

As more organisations fall under regulatory scope, partners will need to support customers in implementing:

• Zero Trust identity controls using Microsoft Entra ID, Conditional Access and Privileged Identity Management
• Endpoint and cloud workload protection using Defender for Endpoint and Defender for Cloud
• Configuration baselines and system hardening using Intune

Strengthening Supply Chain Security

Partners will need to support customers in addressing supply chain risk through:

• Third-party cloud and SaaS risk posture management using Defender for Cloud
• Identity and permission risk management across environments using Entra Permissions Management
• Secure development practices using Defender for DevOps and GitHub Advanced Security
• Secure external collaboration using Purview Information Protection

Enabling Compliance and Governance

Microsoft technologies can support regulatory compliance through:

• Posture benchmarking using Defender for Cloud regulatory compliance dashboard
• Policy and control evidence using Purview Compliance Manager
• Data governance, data loss prevention and insider risk management using Microsoft Purview
• Continuous compliance enforcement using Azure Policy and Defender for Cloud

Improving Detection and Response

To meet incident reporting requirements, organisations will require:

• Unified detection across environments using Microsoft Defender XDR
• Centralised log and alert correlation using Microsoft Sentinel
• Automated incident response using Sentinel Playbooks and Logic Apps
• Investigation and forensic capabilities within Defender XDR

Building Resilience

There is an increased focus on resilience and operational assurance, including:

• Backup and recovery using Azure Backup, Site Recovery and immutable storage
• Resilience through Azure multi-region services
• Testing and readiness using Sentinel analytics and Defender XDR scenarios

Can Technology Alone Solve the Challenge?

One of the key messages from the session was clear.

No single tool can fully address regulatory compliance.

While Microsoft provides a comprehensive set of capabilities across security, compliance and resilience, success depends on how these tools are implemented and operated.

Partnership and expertise remain critical to achieving effective outcomes.

The Partner Opportunity

The Cyber Security & Resilience Bill represents a significant step forward in how cyber resilience is regulated in the UK. It expands responsibility, increases expectations and places greater emphasis on supply chain security and rapid incident response.

For Microsoft partners, it is both a challenge and an opportunity. Those who act early, build the right capabilities and support customers through this transition will not just stay relevant. They will lead.