Endpoint Security for Small Business: Why Antivirus Alone Is Not Enough

Endpoint security for a small business means protecting every laptop, desktop, server and phone that touches your data, and in 2026 that takes more than antivirus. Attackers no longer rely on malicious files that a scanner can recognize; they use stolen passwords, phishing, and the legitimate tools already on the machine, and they work at night. The answer is endpoint detection and response with a team watching it, on top of the basics: multi-factor authentication, patching, backups and email filtering. This article, first published in August 2026 and updated in September, explains what each piece does and what it costs on our published rates.

Why antivirus alone stopped being enough

Traditional antivirus compares files against a database of known malware. It still catches the old threats, and every modern product includes it, but the attacks that hurt small businesses now rarely involve a recognizable file. A phished password gives an attacker a legitimate login. Fileless malware runs in memory and leaves nothing on disk to scan. Attackers use PowerShell, remote desktop and administrative tools that are supposed to be there, a technique called living off the land. And ransomware operators spend hours or days inside a network before they encrypt anything, quietly disabling security tools and deleting backups first. A scanner that waits for a known bad file misses all of that.

What endpoint security is now

• Endpoint detection and response (EDR). An agent on every computer and server that records process activity, network connections and changes, recognizes suspicious behaviour rather than known files, and can isolate a machine from the network the moment something is wrong. SentinelOne is the product we deploy; how to purchase SentinelOne explains the options.
• Managed detection and response (MDR). EDR raises alerts; someone has to act on them, at any hour, and a small business cannot staff that. Huntress managed security adds a 24/7 security operations center that investigates every alert, hunts for persistence mechanisms attackers leave behind, and responds, including isolating machines and calling us.
• Identity protection. Most breaches start with a login, not a file. Multi-factor authentication on every account, with number matching, and monitoring of Microsoft 365 sign-ins for impossible travel and rogue mailbox rules. Huntress covers the cloud side as well.
• Patching. Operating systems, browsers and the applications attackers target most, on a schedule, with the exceptions tracked. Unpatched firewalls and VPNs are a leading entry point.
• Email security. Filtering that blocks phishing, spoofed senders and malicious attachments before they reach the inbox, plus an SPF, DKIM and DMARC setup so your own domain cannot be impersonated.
• Backups that an attacker cannot reach, held with separate credentials and restore-tested. When everything else fails, this is what brings the business back.
• People. Short, regular security awareness training, because the phishing email that starts most incidents is opened by a person. Our phishing quiz shows what staff are up against.

What it costs

These are our published rates, priced per device or per user so you choose the depth you need: SentinelOne antivirus and EDR, $12 per computer or server per month, or $8 alongside Huntress; Huntress computer security, $9 per computer or server per month; Huntress cloud security for Microsoft 365, $5 per user per month; email security and spam filtering, $6 per mailbox per month; security awareness training, $2 per user per month. A ten-person office with ten computers and one server covers all of it for roughly $200 a month on top of managed IT. Set against the cost of a ransomware recovery, or the questions on a cyber insurance application, it is the least expensive line on the invoice.

Where to start

If you do nothing else this month: turn on multi-factor authentication everywhere, put EDR with a managed response team on every computer and server, confirm patching is actually happening, and test a backup restore. Then email filtering and training. Our managed cybersecurity service runs all of it as part of a managed plan, and preventing ransomware attacks explains how the pieces fit together against the attack small businesses fear most.

Common questions

What is an endpoint?

Any device that connects to your network or your cloud accounts: laptops, desktops, servers, phones, tablets, and increasingly the virtual machines in the cloud. Each is a possible way in, which is why they are secured individually rather than relying on the office firewall.

Is antivirus enough for a small business?

No. Traditional antivirus recognizes known malicious files. Most current attacks use stolen passwords, phishing, and legitimate tools such as PowerShell, and leave no file to recognize. Endpoint detection and response watches behaviour instead, and a managed response team acts on what it sees at 2 a.m.

What is EDR, and what is MDR?

EDR, endpoint detection and response, is software on each device that records what happens, spots suspicious behaviour and can isolate the machine. MDR, managed detection and response, adds a 24/7 team of analysts who investigate the alerts and respond, which a small business cannot staff itself.

What does endpoint security cost?

On our published rates SentinelOne is $12 per computer or server per month, or $8 alongside Huntress, and Huntress managed security is $9 per computer or server per month. Email security is $6 per mailbox and security awareness training $2 per user. A ten-person office with a server can cover everything for roughly $200 a month.

Do phones need endpoint security?

Phones that reach company email and files should at minimum be enrolled in mobile device management so they can be required to have a passcode and be wiped if lost. Full endpoint protection on phones is less common in small businesses but is available.

Where should a small business start?

Multi-factor authentication on every account, endpoint detection and response with a managed response team on every computer and server, patching on a schedule, a tested backup, and email filtering. In that order. Everything else builds on those five.

Talk to us

Call 952-548-5558 or contact us; the first conversation is free and there is no long-term contract.