Keeping Remote Workers Secure: AMVIA Cybersecurity Guide

When the whole workforce sat in one office, the perimeter was obvious: a controlled network, managed kit, locked doors. Hybrid and remote working dismantled that. Staff now reach corporate systems from home broadband, hotel Wi-Fi and personal laptops your IT team has never touched. The fix is not a single product. It is a layered model — and the good news for SMEs is that most of it already ships inside Microsoft 365.

Why is remote working harder to secure than office working?

Remote working removes the controls the office gave you for free: a managed network, physical access checks, and colleagues who could glance over and say "that email looks dodgy". The result is a wider attack surface and weaker informal verification — so the technical controls have to do more work.

The UK government's Cyber Security Breaches Survey 2025 continues to show phishing as the most common attack vector facing UK businesses, and home working stretches every weak point: unmanaged devices, poorly secured home routers, and shadow IT used to dodge corporate controls. The NCSC's home working guidance is blunt about the same risks. None of this means remote working is unsafe — it means the defaults that protected the office no longer apply, and you have to rebuild them deliberately.

How do you secure the device for remote workers?

The most reliable control is to put staff on managed devices — laptops and phones issued and configured by IT, with the same security policy enforced wherever the device sits. A managed endpoint stays protected on hotel Wi-Fi exactly as it would on the office LAN, because the protection lives on the device, not the network.

Every managed remote device should have:

• Full-disk encryption — BitLocker on Windows, FileVault on macOS — so a stolen laptop does not become a data breach.
• Endpoint detection and response (EDR) — behavioural threat detection that works with no corporate network connection. This is what managed endpoint detection and response delivers, with alerts watched around the clock.
• Automatic patching — operating system and app updates applied even when the device rarely touches a corporate network.
• Mobile Device Management (MDM) — via Microsoft Intune device management, enforcing configuration and enabling remote wipe if kit is lost.

Where you allow personal devices, MDM can apply a separate managed work profile, keeping a clean boundary between personal and corporate data without IT taking control of someone's private phone. We cover the trade-offs in detail on our BYOD security guidance.

How does identity and access control protect remote staff?

The old assumption — anyone inside the network is trusted — is useless when the "network" is 200 home broadband connections. Zero trust replaces it: every access request is verified explicitly, every time, regardless of where it comes from. For an SME that means MFA everywhere, conditional access, and managed devices.

In practice, three controls do the heavy lifting:

• Multi-factor authentication on every cloud service. Microsoft 365, finance, HR, CRM — any app reachable from outside the office must require MFA. Our MFA setup for Microsoft 365 walks through enforcing it without locking out staff.
• Conditional access policies. Microsoft Entra conditional access can require a compliant managed device, block sign-ins from high-risk locations, and demand step-up MFA for sensitive actions.
• VPN or zero trust network access (ZTNA). A VPN gives an encrypted tunnel to on-premise systems. Larger or higher-risk teams gain more from ZTNA, which grants access per application rather than dropping everyone onto the corporate network.

This identity layer is the single highest-value investment for most SMEs, and it underpins everything we do on the wider managed cybersecurity side. One provider. Security-first. Microsoft-certified.

Is a VPN enough to secure remote workers?

No. A VPN encrypts traffic between the device and the network, which is useful, but it protects the pipe — not the device, the identity, or the user. Malware already on the laptop rides straight through the tunnel, and a phished password defeats the VPN entirely. Treat it as one layer, never the strategy.

Here is how the common controls actually compare:

The pattern is obvious: no single row covers the others. Securing remote workers is about stacking these layers so a failure in one is caught by the next.

How do you protect home networks and communication channels?

You cannot manage a home router, so do not depend on it. Reduce the home network to an untrusted transport: secure the endpoint, require MFA on every service, and a compromised home network no longer means a compromised work account. Then standardise communication onto governed, encrypted channels rather than personal apps.

For the home network, give staff three plain instructions: change the router's default admin password, use WPA3 or WPA2 Wi-Fi encryption, and keep work kit off the same segment as personal IoT gadgets where a guest network allows it. For communication, standardise on Microsoft Teams inside Microsoft 365 — encrypted, audit-logged, and governed — and keep sensitive business conversations off personal WhatsApp and consumer email. Microsoft 365 Business Premium bundles the security tooling to do all of this, listed at £16.90 per user/month (ex VAT, annual).

What about security awareness for remote teams?

Remote staff face the same phishing and social engineering as office staff, but with fewer informal checks — no colleague to lean over and sanity-check a suspicious invoice. Awareness training tailored to remote work closes that gap and turns the user into a control rather than a liability.

Effective remote awareness training is specific, not generic. Cover home network basics, how to spot a phishing attempt when working alone, the right way to verify an unusual request from a "manager", and which channels are approved for what. Pair it with technical phishing protection so that when someone does click, the controls catch it. The Cyber Essentials scheme is a sensible baseline to certify against — AMVIA holds Cyber Essentials Plus ourselves.