Endpoint security for business: detect, respond and stay in control

What endpoint security for business covers

Most organisations already run some form of antivirus. That is the starting point, not the finish line. Endpoint security for a business has to cope with attackers who log in with stolen passwords, use the same admin tools your IT team uses, and wait until evening to act. Prevention alone cannot see that, so a complete programme combines several layers:

• Prevention (antivirus, NGAV and EPP): blocks known and suspicious malware before it runs. Our sister site endpointprotection.uk covers antivirus and endpoint protection products and editions.
• Detection and response: endpoint detection and response records what happens on each device so you can spot, investigate and contain an attack; extended detection and response adds identity, email, network and cloud signals.
• Someone watching: an EDR console is only useful if someone triages the alerts. Many vendors offer a managed detection and response (MDR) service run by their own analysts.
• Policy and device controls: a written endpoint security policy, USB device control, application allowlisting and endpoint privilege management.
• Patching and hardening: a repeatable patch management process and secure configuration baselines through endpoint hardening.
• Data and mobile protection: full disk encryption for lost or stolen devices and mobile threat defence for phones and tablets.
• Ransomware readiness: practical steps to prevent ransomware attacks, including rollback, backups and a response plan.
• UK compliance: mapping all of this to Cyber Essentials, UK GDPR and NCSC guidance in endpoint security compliance.

If you are new to the terminology, start with what is an endpoint in cyber security, then work through our endpoint security best practices checklist.

Build your endpoint security strategy in layers

An endpoint security strategy does not need to be a long document. It needs to answer, in order, what you have, how you make it harder to attack, how you will notice an attack, and who will act. We suggest building it in these layers, because each one makes the next cheaper and more effective:

1. Know every device. Keep an inventory of laptops, desktops, servers, virtual machines, phones and tablets, including who owns them and whether personal devices reach work data. You cannot protect what you have not counted.
2. Harden and patch. Apply a secure configuration baseline, remove unused software and keep operating systems and applications up to date. See endpoint hardening and the patch management process.
3. Reduce what can run and who can change things. Remove standing local admin rights, restrict removable media and move towards default-deny application control.
4. Prevent and detect on one agent. Most current platforms combine next-generation antivirus with EDR in a single agent and console, so prevention and investigation share the same data. Our EDR vs antivirus guide explains the difference.
5. Decide who responds. Agree who receives alerts, what they are allowed to do (isolate a device, kill a process) and what happens outside office hours, whether that is your team, your IT provider or a vendor-run managed service.
6. Protect data and phones. Encrypt disks, escrow recovery keys centrally and add mobile threat defence where phones and tablets reach email and business apps.
7. Plan for the bad day. Keep backups you can restore from, write down your incident response steps, and test them.
8. Prove it. Use console reports to evidence controls for Cyber Essentials, insurers and customers, and review the strategy when your estate or risks change.

Not every organisation needs every layer on day one. A small firm with good patching, no local admin rights and EDR backed by a vendor's managed service is in a far stronger position than one with three overlapping products nobody monitors.

Where to start on this site

Each area below has its own guide, with the options available and how to choose between them.

Who watches the alerts: your team, MDR or both?

A common gap in endpoint security is not the product. It is that nobody is looking at the console when something happens, especially in the evening or at a weekend. EDR tells you a device is behaving suspiciously; a person still has to decide whether it is an attack and act.

You have three broad options:

• Your own team triages alerts during working hours, with automated response rules (for example, isolate a device when ransomware behaviour is detected) covering the rest.
• A vendor-run managed service where the vendor's own analysts monitor, investigate and respond within a policy you agree. Examples among the platforms we supply include CrowdStrike Falcon Complete, SentinelOne's Wayfinder managed detection and response (formerly Vigilance MDR), ThreatDown MDR, Bitdefender MDR, WatchGuard MDR, Sophos MDR and Check Point MDR.
• A mix: the vendor service handles out-of-hours detection and containment, and your team or IT provider deals with clean-up and follow-up.

We do not run a security operations centre ourselves. We help you choose a platform and, where it makes sense, the vendor's managed service, then set up the response policy so the right people are told and the right actions are pre-approved. Our sister site explains managed detection and response in more depth, and EDR vs XDR vs MDR compares the three.

Endpoint security platforms we supply

We are vendor-independent: we supply and support several endpoint security platforms, so we can recommend the one that fits your devices, your Microsoft 365 setup and who will respond, rather than the one we happen to sell.

We also supply specialist layers such as Halcyon anti-ransomware alongside an existing EDR, and Keeper Endpoint Privilege Manager for removing local admin rights. The full directory is on our endpoint security vendors page, and licensing detail for many of these products is on Software Licensing UK. Pricing depends on device numbers, modules and term, so ask us for a quote.

UK compliance: Cyber Essentials and NCSC guidance

Endpoint controls carry much of the weight in UK frameworks. Cyber Essentials has five technical controls (firewalls, secure configuration, security update management, user access control and malware protection). All five apply to the laptops, desktops, servers and phones in scope, and secure configuration, updates, access control and malware protection are largely about how those devices are set up and maintained. The current requirements, version 3.3 with IASME's Danzell question set, apply to assessment accounts opened from 27 April 2026; our sister site covers the Cyber Essentials requirements in detail.

The NCSC's Device Security Guidance goes further, covering how to choose, provision, configure and manage devices, with platform guides and recommended configurations. UK GDPR expects appropriate security for personal data, which for laptops and phones usually means encryption and access control. Our endpoint security compliance guide maps each framework to the controls and reports that evidence them. We help you prepare; certification and audit decisions sit with the assessor.

How we help

We start by understanding what you already have: the devices, the agent or agents installed, your Microsoft 365 licences, how alerts are handled and where the gaps are. From there we can:

• Recommend a platform and, where it fits, a vendor-run managed service, with the reasoning written down
• Help plan and run an EDR deployment from pilot to full rollout, including moving off an existing product
• Set up policies for device control, application control, encryption and patching that match your written policy
• Arrange licensing for the platforms we supply, with pricing confirmed at quote

Contact us to talk through your endpoint security, or tell us what you run today and what worries you most.