Every Unprotected Device Is a Door Left Wide Open

What Is Endpoint Security and Why Does It Matter?

An 'endpoint' is any device that connects to your business network — laptops, desktops, servers, tablets, and smartphones. Every endpoint represents a potential entry point for attackers. If a single device is compromised, it can be used as a beachhead to access other systems, steal data, or deploy ransomware across your entire network.

For UK businesses with remote and hybrid workforces, endpoint security is particularly critical. Office-based employees operate behind a corporate firewall; remote workers connect from home networks, coffee shops, and hotels — environments over which the business has no control. The endpoint itself becomes the security perimeter.

According to the Ponemon Institute, 68% of organisations suffered at least one endpoint attack that compromised data or IT infrastructure. The consequences range from disrupted operations (the most common outcome) to complete data loss and regulatory fines.

EDR vs Traditional Antivirus: What Is the Difference?

Traditional antivirus software works by comparing files against a database of known malware signatures. If a file matches a known bad signature, it is blocked. If it does not match — because it is new, modified, or specifically designed to evade detection — it passes through undetected.

This approach has fundamental limitations in the modern threat landscape. Ransomware operators routinely modify their malware to evade signature detection. Fileless malware operates entirely in memory, leaving no file for antivirus to scan. Living-off-the-land attacks use legitimate system tools (PowerShell, WMI) to carry out malicious activity, again leaving no malicious file to detect.

How EDR Works

Endpoint Detection and Response (EDR) takes a fundamentally different approach. Rather than looking for known bad files, EDR monitors the behaviour of every process running on the endpoint — in real time — and identifies patterns of activity that indicate malicious behaviour, even if the specific malware has never been seen before.

EDR can detect:

• Processes attempting to access or encrypt large numbers of files (ransomware behaviour)
• Scripts attempting to escalate privileges or access credential stores
• Network connections to known malicious infrastructure
• Lateral movement between devices using legitimate admin tools
• Persistence mechanisms being established (registry changes, scheduled tasks)

Crucially, EDR does not just detect — it responds. When a threat is identified, EDR can automatically isolate the affected endpoint from the network (preventing spread), kill malicious processes, and roll back changes made by malware — all within seconds of detection.

EDR Detection Rates

Independent testing consistently shows that modern EDR solutions detect over 99% of real-world attack techniques, compared to 60–70% for traditional signature-based antivirus. The gap is particularly significant for novel ransomware variants and fileless attacks.

Managed Endpoint Security vs Self-Managed: Which Is Right for You?

EDR tools are powerful, but they generate a significant volume of alerts — many of which are false positives. Without a team dedicated to investigating those alerts, the genuine threats get lost in the noise. This is the core problem with self-managed endpoint security: the tool works, but no one is watching it.

Self-Managed EDR

Self-managed EDR means your internal IT team is responsible for reviewing alerts, investigating threats, and responding to incidents. This works for organisations with dedicated security staff — typically businesses with 200+ employees and an in-house security function. For most UK SMEs, the IT team is generalist, handling helpdesk, infrastructure, and user management — with no time or training to manage a security event.

Managed EDR (MDR)

Managed Detection and Response (MDR) means a provider takes responsibility for monitoring the EDR alerts, investigating threats, and responding to incidents on your behalf. AMVIA's managed endpoint service uses Huntress MDR alongside Microsoft Defender for Endpoint — providing the detection capability of enterprise-grade EDR with human-led investigation and response.

For UK SMEs, managed EDR delivers better security outcomes at lower cost than attempting to self-manage EDR with an understaffed internal team.

Remote Worker Endpoint Security

The shift to hybrid working has created a significant endpoint security challenge. Remote workers operate outside the corporate network perimeter, connecting from home broadband connections and public Wi-Fi. Without robust endpoint security, a compromised home-worker laptop can give an attacker direct access to corporate systems.

Key considerations for remote worker endpoint security include:

• Encryption: All portable devices should have full disk encryption enabled — BitLocker on Windows, FileVault on macOS. If a device is lost or stolen, encrypted data cannot be accessed without the decryption key.
• Patch management: Remote devices must receive patches as promptly as office devices. Unpatched software is the most common vulnerability exploited in attacks. AMVIA's managed patching service covers remote devices as well as on-site infrastructure.
• Monitoring: EDR agents report to the cloud-hosted management console regardless of the device's location, so AMVIA's SOC monitors remote worker devices as effectively as office devices.
• VPN or Zero Trust: Connecting remote workers to corporate resources through a VPN (or, preferably, a Zero Trust Network Access solution) ensures that lateral movement from a compromised home device is limited.

Endpoint Security Cost: What to Expect

Managed endpoint security for UK SMEs typically costs between £8 and £20 per device per month, depending on the scope of the service. This usually includes:

• EDR software licence (Microsoft Defender for Endpoint or third-party EDR)
• Huntress MDR or equivalent managed detection layer
• SOC monitoring and alert investigation
• Patch management
• Monthly security reporting

Compare this to the cost of a single ransomware incident — the average cost of recovery for a UK SME is £47,000, including downtime, remediation, and data recovery. Managed endpoint security is one of the highest-return investments available to a UK business.

Choosing an Endpoint Security Provider

When evaluating managed endpoint security providers, consider:

• Do they operate their own SOC? AMVIA operates its own UK-based Security Operations Centre — not a white-labelled offshore service.
• What tooling do they use? Enterprise-grade tools (Microsoft Defender for Endpoint, Huntress, CrowdStrike) consistently outperform consumer-grade alternatives. Ask specifically what EDR platform is used.
• What is the response time SLA? For a device actively being attacked, response time matters enormously. AMVIA guarantees one-hour response to critical endpoint incidents 24/7.
• Do they cover remote and mobile devices? Any modern endpoint security service must cover home-worker laptops and mobile devices, not just office infrastructure.