Security

24/7 protection, simplified security, and real-time response powered by Node4 

Do more with your cyber-protection strategy.

Cybercrime has never been more profitable and UK organisations are now prime targets. Today’s threats are faster, smarter, and harder to detect. From ransomware and data leaks to social engineering and session hijacking, attackers are blending technology with psychology and it’s working. Complexity is the new vulnerability. That’s why security services should focus on clarity, control, and confidence not chaos.

43%

of UK businesses reported a cyber-attack within the last 12 months – Gov.uk

20%

Of UK businesses had been a victim of Cybercrime over the last year – Gov.uk

600M

Estimated Attacks per day worldwide – Identity Theft Resource Centre & Microsoft

Our security services are built on a tightly integrated Microsoft security stack, enhanced by Node4’s UK-based, Security-Cleared experts. We bring together: 

  • Microsoft Sentinel – Cloud-native SIEM for real-time threat detection and analytics 
  • Microsoft Defender XDR – Unified protection across endpoints, identities, email, and cloud 
  • Microsoft Entra – Identity governance and secure access 
  • Microsoft Purview – Data protection and compliance 
  • Microsoft Secure Score – Visibility into posture and improvement actions.

Powered by Microsoft. Delivered by Node4.

Security Consulting

Our team of experienced Security Consultants provide a cost-effective approach to improving your security posture, advising on governance, risk management, security testing and incident response.

Managed SIEM

Threat Detect is our managed SIEM service, powered by Microsoft Sentinel. We offer 24/7 proactive alerting of risks and events tailored to your business. We collaborate with technology partners to focus alerts, allowing you to concentrate on running your organisation.

Penetration Testing

Our experts work on a variety of IT infrastructures day in, day out. Without compromising customer security, we look at trends and vulnerabilities, investigating your infrastructure from the outside and the inside using the lens that hackers would use.

Fully Accredited

ACT Against Cyber Threats 

Node4’s ACT framework delivers a simplified approach to security: ACT Against Cyber Risk is our approach that provides a comprehensive roadmap to simpler, smarter cyber defence. It focuses on three key pillars: Assess, Consolidate, and Triage to help organisations manage and mitigate threats.

Assess – Gain Clarity on Risk 

Get a clear picture of where you stand. Our standards-aligned assessments are fast, insightful, and designed for the real world. Understand your vulnerabilities, benchmark against best practices, and build a security roadmap you can trust. 

Included Services:

  • Security Doctor Assessment.
  • Cyber Essentials Readiness.
  • NIST Risk Assessment.
  • Virtual CISO (vCISO) Advisor.
  • Vulnerability Assessment.
  • Red Teaming and Penetration Testing.

Consolidate – Reduce Complexity, Strengthen Control 

Too many tools? You’re not alone. Tool sprawl, overlapping features, alert fatigue, and operational silos are draining teams and exposing gaps. We consolidate your stack around trusted platforms like Microsoft and Fortinet, that are integrated and optimised to reduce the noise and enhance protection. 

Included Services:

  • Identity & Assessment Management.
  • Zero Trust Architecture & Conditional Access. 
  • Endpoint Protection & Secure Configuration.
  • Fortinet Security Fabric.
  • Secure SD-WAN & SASE.

Triage – Rapid Response, Around the Clock 

Breaches happen fast. You need eyes on your estate, 24/7. With Node4’s UK-based Security Operations Centre (SOC), managed SIEM, and expert analysts, you get real-time protection and human-led triage when it matters most. 

Included Services:

  • 24/7 UK-Based Security Operations Centre (SOC).
  • Identity Threat Detection & Response.
  • Tailored Threat Intelligence & Detection.
  • Incident Response & Forensic Investigation.
  • Security Alert Triage & Escalation.

The Node4 Cyber Security Strategy

CloserStill Media

As CloserStill Media’s global footprint expanded, so did the stakes for cybersecurity. Discover how the events powerhouse transformed its reactive approach into a proactive, board-backed strategy—powered by Node4 and Microsoft Sentinel. From 24/7 threat monitoring to audit-ready resilience, this is a story of how smart partnerships can turn cyber risk into business confidence.

Cybersecurity Guide: The rising impact of cybercrime

Explore the ever-growing impact of cybercrime and learn effective strategies to safeguard your organisation in our comprehensive cybersecurity guide. Delve into prevalent security threats and discover practical methods to enhance your organisation’s overall security posture.

Gain valuable insights into common security risks, common threats, and emerging trends with our security guide. This resource not only provides a deeper understanding but also offers guidance on how companies can enhance their security, mitigate risks, and prevent attacks. Ensuring you’re on the path to effectively safeguarding your organisation.

Need more context?

We’ve spoken to over 600 business and IT leaders across the UK’s mid-market about what’s important to them. Tech investment is shifting with implications for security and your industry.

Expose Cybersecurity Complacency 

Despite 92% claiming confidence in their defences, 31% aren’t actively addressing cyber threats. This report digs into the reality behind the overconfidence. 

Decode the AI Reality

Learn why AI ranks 9th in strategic priorities – and why that’s a red flag for future growth. Uncover the hidden disconnect between business ambition and technical execution.

See how we can help you secure your organisation

Read more about…

Cybersecurity MSP Security

Security Operations Centre

Cyber threats are constant and evolving, and the Security Operations Center (SOC) stands as the digital frontline.
Blog The Node4 Team
Cybersecurity

Threat Detection and Response

Cyber threats are growing more sophisticated and relentless; organisations can no longer rely on reactive security measures.
Blog The Node4 Team

Get in touch

If you’d like to know more about the expertise our cybersecurity consultants can offer, or the wider range of services we provide that can benefit your organisation, get in touch with us today.

Our team of certified cloud security professionals will be happy to help with any query you may have.

Sales: 0345 123 2222

You can also learn more about our range of services, including our cloud solutions, data centre services, colocation hosting and managed IT services.

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