Redefining Cyber Defence: How PureCyber MXDR Delivers Unified 24/7 Threat Detection & Response
With cyber threats constantly reshaping and evolving, and the speed, sophistication and reach of modern attacks beginning to outpace traditional defences – it’s now more crucial than ever to ensure continuous evolutions in cyber security and prevention.
Attackers no longer rely solely on brute-force tactics; they’re consistently blending social engineering, living-off-the-land techniques, and automation to stay invisible until it’s too late. For UK organisations, especially those bound by regulatory or operational continuity demands, reactive monitoring is no longer a safe strategy to protect your operations.
PureCyber MXDR (Managed Extended Detection and Response) is designed for a new era of cyber defence. Providing continuous 24/7 threat detection, investigation, and response across every layer of your digital estate - from endpoints and networks to cloud platforms and SaaS applications.
Built, operated, and staffed entirely in the UK, the service combines advanced automation with human-led analysis, ensuring your security operations are proactive, resilient, and deeply integrated with your business needs.
This is not just outsourced SOC monitoring. It’s a strategic cyber defence partnership - a way to extend your internal capabilities, strengthen response readiness, and eliminate blind spots without the complexity of managing multiple tools or vendors.
How PureCyber MXDR Works
1. Vendor-Agnostic Data Collection
Every organisation has a unique technology stack, often spanning dozens of platforms. PureCyber MXDR takes a vendor-agnostic approach, collecting telemetry and security data from across your environment to provide a unified picture of risk.
It draws from multiple data streams, including:
Firewalls and network gateways for perimeter and traffic-level monitoring.
System logs and network telemetry for endpoint and infrastructure visibility.
SaaS platforms such as Microsoft 365 and Google Workspace for collaboration and identity signals.
Third-party APIs to integrate external security feeds and services.
EDR and antivirus tools for endpoint threat intelligence.
Cloud environments (PaaS/IaaS) for workload, configuration, and service data.
This unified data model ensures that even the most subtle activity - such as an unexpected file share from a cloud drive or an anomalous login at 2 a.m. - is captured, correlated, and analysed in context.
2. Detection & Correlation Engine
At the core of our MXDR is the PureCyber Detection Engine - a system built to transform raw data into meaningful, actionable insight.
The engine includes:
Log Normalisation: Standardises disparate data formats to allow consistent cross-platform analysis.
MITRE ATT&CK-aligned Rules: Detection logic mapped to the industry’s most comprehensive framework of adversary tactics and techniques.
Event Correlation: Links seemingly isolated events - such as a new admin account, a PowerShell command, and an outbound data spike, to identify multi-stage attacks.
Threat Intelligence Enrichment: Integrates feeds from multiple intelligence sources to add real-time context around domains, IP addresses, and malware indicators.
UEBA and Anomaly Detection: Uses behavioural baselines to flag suspicious user or device actions that deviate from normal operations.
This multi-layered approach means the system doesn’t just detect known threats, and instead identifies unknown patterns of compromise, helping clients catch threats in their earliest stages.
3. Response Automation & Playbooks
When a threat is detected, seconds matter. PureCyber’s response automation framework ensures containment begins the moment an alert is confirmed.
Pre-built playbooks handle common incidents such as ransomware, phishing, credential abuse, or insider activity, automatically performing tasks like:
Isolating compromised endpoints.
Revoking active sessions.
Blocking malicious domains or IP addresses.
Resetting compromised credentials.
These actions are guided by escalation logic based on severity, asset criticality, and your service-level agreements. Sensitive responses, such as disabling executive accounts or halting production systems, pass through human approval workflows to maintain operational continuity.
This balance between speed and oversight allows PureCyber MXDR to drastically reduce mean time to respond (MTTR) without sacrificing precision.
4. Unlimited Incident Response Guarantee
We’re so confident in our ability to detect and respond to threats that we include unlimited Incident Response as standard with all MXDR services.
If the worst should happen, our incident response team will act immediately to investigate, contain, and recover your environment, without restriction on time or scope. This guarantee gives our clients total peace of mind, knowing that expert responders are on hand around the clock to protect business continuity and minimise impact.
Our approach ensures that detection and response are not treated as separate services but as part of a single, continuous protection model. Whether the incident originates internally, externally, or across multiple vectors, our SOC and incident response teams work together to restore security and confidence quickly and effectively.
5. Human-Led 24/7 UK SOC
Think of us as your cyber security extension team, not just a dashboard provider.
Technology alone can’t defend against human adversaries. That’s why every MXDR client is supported by our UK-based Security Operations Centre (SOC) - a CREST-certified facility staffed exclusively by vetted analysts.
Each client receives named analysts who understand their infrastructure, business context, and risk profile. The SOC operates continuously, providing coverage across time zones and threat surfaces.
Roles within the SOC include:
Tier 1 Analysts: Managing triage, enrichment, and automation triggers.
Tier 2 Analysts: Conducting forensic investigation and root-cause analysis.
Threat Hunters: Actively searching for indicators of compromise (IOCs) and abnormal behaviours.
Incident Responders: Delivering guided remediation steps, forensic insight, and executive reporting.
Every detection is reviewed by a human analyst, ensuring that clients are only alerted when it truly matters - reducing false positives while increasing confidence and speed of response.
6. Threat Exposure & Attack Surface Management
PureCyber MXDR extends beyond internal monitoring to address the external threat landscape - the areas where attackers often strike first.
The platform continuously monitors for:
Leaked credentials, validated against Active Directory to remove false positives.
Exposed or misconfigured assets, such as forgotten subdomains or open databases.
Spoofed domains and brand impersonation campaigns.
Dark web mentions and stealer log data linked to your organisation.
Analysts issue tailored threat intelligence reports with risk scoring, mitigation recommendations, and takedown coordination. This helps clients stay ahead of attackers and close gaps before they can be exploited.
Real-World Scenarios: MXDR in Action
Microsoft 365 Account Compromise – Stopped Before Damage
A mid-sized UK professional services firm saw one of its Microsoft 365 accounts accessed from an unfamiliar location - a login from Eastern Europe using a Linux device.
There was no multi-factor authentication in place, and the login was successful.
Investigation:
PureCyber MXDR immediately correlated the login with a known malicious IP address associated with credential-stealer activity. Analysts discovered new inbox forwarding rules and suspicious third-party app permissions - early signs of persistence tactics.
Response:
The account was immediately disabled, all sessions revoked, and access tokens invalidated. Analysts removed the rogue inbox rules and verified there was no lateral movement or data exfiltration via endpoint scans.
Outcome:
The incident was contained within minutes, preventing financial and reputational damage. The event led to an organisation-wide rollout of MFA and the tightening of access policies — transforming a near-miss into a catalyst for stronger security governance.
Insider Threat via SharePoint & OneDrive – Caught in Time
A corporate user triggered anomaly alerts after downloading over 1,000 sensitive SharePoint and OneDrive files outside of normal business hours.
Investigation:
Behavioural analytics showed this activity was out of character for the user. Analysts confirmed through HR that the individual was serving their notice period. The downloaded files included confidential materials from multiple departments, but no external data transfers were observed.
Response:
The user’s sessions were terminated, SharePoint and OneDrive access revoked, and a full audit log compiled for HR and legal review. Analysts also worked with IT to strengthen offboarding processes and permissions reviews.
Outcome:
No data leakage occurred. The incident drove policy improvements around insider threat detection, data access governance, and proactive behavioural monitoring.
Onboarding and Continuous Optimisation
PureCyber MXDR is built for rapid, low-friction deployment. Most organisations go live in under 30 days, with lightweight, API-based integrations and no disruption to existing tools.
From the outset, clients are assigned a dedicated onboarding manager and named analyst to ensure full alignment of log sources, alert tuning, and response workflows.
Post-deployment, the system undergoes continuous optimisation, with detection rules, automation logic, and threat intelligence feeds updated automatically.
Quarterly analyst reviews provide:
Trend analysis of emerging threats.
Risk and exposure insights.
Posture improvement recommendations tailored to your environment.
This ongoing collaboration ensures the service evolves in lockstep with your business and threat landscape.
The PureCyber Advantage: Confidence Through Intelligence, Expertise, and Integration
PureCyber MXDR is more than a monitoring solution - it’s a UK-based, 24/7 defence ecosystem designed to detect, investigate, and neutralise threats before they disrupt operations.
At its core, PureCyber MXDR is powered by a CREST-certified, security-cleared SOC that acts as an extension of your team. Every alert and response is reviewed by real analysts, ensuring context-driven decisions aligned to business priorities. Direct access to these experts guarantees clear communication, consistency, and accountability - unlike offshore or ticket-driven services. Its strength lies not just in technology, but in the seamless fusion of automation, human expertise, and transparency.
Our vendor-agnostic architecture integrates with Microsoft 365, AWS, Google Cloud, legacy on-prem systems, and more - providing full visibility across endpoints, networks, cloud workloads, and SaaS platforms.
Built for trust and compliance, our UK-hosted MXDR platform is aligned with ISO 27001, Cyber Essentials Plus, and NCSC CAF standards. Transparent, fixed pricing and a co-managed model give organisations control over which elements to retain internally and which to offload.
PureCyber MXDR will transform your cyber security from a reactive burden into a strategic advantage - unifying technology, intelligence, and expertise to enable confidence, continuity, and control. 24/7, 365 days a year.
The Next Step?
Want to delve even deeper into the benefits of deploying PureCyber MXDR into your digital environment? Join our upcoming webinar - The Strategic Edge: Demystifying MXDR to Align Growth & Cyber.
We’ll highlight what makes it different from EDR or MDR, why it’s essential for modern cyber defence, and how it supports growth-focused strategic decision-making.
Join our experts to discover what makes MXDR the most advanced and adaptive threat detection and response model, and why it should be a foundational element of any cyber resilience plan.
How Can PureCyber Help?
The PureCyber team are here to take over the burden of your cyber security and ensure your organisation’s data remains secure and well managed, with proactive monitoring and real-time threat intelligence - providing you with a comprehensive and reliable cyber department to support you in all aspects of your security efforts, including: 24/7 Security Operations Centre (SOC) services, Managed Detection & Response (MDR/EDR),Threat Exposure Management (TEM) & Brand Protection Services & Penetration Testing.
PureCyber is recognised as an Assured Service Provider by the NCSC to offer governance and compliance consultancy services/audits. Contact our team of compliance experts to enquire about our full range of Governance Support - including Cyber Essentials, ISO 27001, FISMA, SOC1 and SOC2 standards.
Get in touch or book a demo for more information on our services and how we can safeguard your organisation with our expert cyber security solutions.
Email: info@purecyber.com Call: 0800 368 9397