Best Antivirus for Small Business: 11 Options

Small businesses are easy targets because they rarely have a security team. One clicked link can lock every file in the office, and recovering takes far longer than preventing it.

The eleven options below are listed alphabetically and in no particular order, a mix of well-known security brands and smaller specialists. Each description comes from the vendor's own site, read this week. For other quick wins, see my guide on how to improve your business security.

Business antivirus options at a glance

In the free plan column, Yes means the tool's own site describes free use or a free plan, Trial only means a time-limited trial and No means neither is stated on the pages we read. Business security products are usually licensed per device or per user.

Tool	Type	Good for	Free plan
Avast Business	Cloud-managed antivirus	Managing devices from one cloud hub	No
Bitdefender GravityZone	Endpoint security	Strong protection with central control	Trial only
Coro	Workspace security platform	Lean IT teams covering everything	No
Emsisoft	Business antivirus	Lightweight layered protection	Trial only
ESET	Endpoint security	Ready-made plans by business size	No
Heimdal	Unified security platform	Patching, access and threats together	Trial only
Huntress	Managed detection	Round-the-clock human threat hunting	Trial only
Norton Small Business	Small business antivirus	Very small businesses and sole traders	No
Sophos	Endpoint security	Adding managed detection later	No
ThreatDown	Endpoint security	Simple protection from a known name	No
Trend Micro	Security suite	Email plus endpoint protection	No

Eleven business antivirus options

Avast Business

Best for: Small businesses that want endpoint protection, patching and backup options managed from one cloud dashboard.

Bitdefender GravityZone

Best for: Owners with a part-time IT person who want strong ransomware protection and one console for every device.

Coro

Best for: Companies with one or two IT people who want their workspace security handled from one platform built for lean teams.

Emsisoft

Best for: Offices that want lightweight antivirus with web protection that blocks malicious sites before staff reach them.

ESET

Best for: Growing businesses that want a unified ESET PROTECT platform with ready-made plans for different business sizes.

Heimdal

Best for: Growing businesses working towards standards such as ISO 27001 that want patching, privilege access and threat detection together.

Huntress

Best for: Businesses, often through their IT provider, that want 24/7 monitoring and response on top of standard antivirus.

Norton Small Business

Best for: Sole traders and very small teams who want small business antivirus from a security brand they already know from home.

Sophos

Best for: Mid-size businesses that want endpoint protection now and the option to add managed detection and response later.

ThreatDown

Best for: Small businesses that already trust Malwarebytes at home and want AI-driven endpoint protection built for business.

Trend Micro

Best for: Teams that want email and endpoint protection in one suite, with extended detection and response available.

How often small businesses get hit

Here's the number that should end any debate. The NCSC says 1 in 2 small businesses suffer a cyber incident every year, and that many of its recommendations can be completed in as little as 5 minutes.

Antivirus is one layer. Pair it with the quick wins the NCSC lists, such as securing email and important accounts, protecting devices and backing up your data.

Home antivirus or business security?

Home antivirus protects one person's devices. Business security adds a central dashboard, so you can see every device, push updates and spot problems without walking round the office. As soon as you have staff, the dashboard is worth having.

Some products go further with detection and response features or a managed service that watches for threats day and night. Those suit businesses that hold sensitive data or can't risk downtime.

Setting up protection in an afternoon

1. List every laptop, desktop and phone used for work.
2. Install business security on each one from a central dashboard.
3. Turn on automatic updates for the operating system and apps.
4. Switch on two-step sign-in for email and key accounts.
5. Set up automatic backups and test a restore.
6. Check the dashboard weekly for alerts or unprotected devices.

Features that matter for small teams

• Central dashboard. See every device in one place.
• Ransomware protection. Stop files being encrypted.
• Web protection. Block dangerous sites before staff reach them.
• Easy deployment. Install remotely on new devices.

When to bring in an IT provider

If you have more than a handful of staff, or you hold client data, an IT provider can install, monitor and respond for you. Many of the products on this list are sold and managed through IT providers, which gives you expert help without hiring.

Training your team

Many attacks start with a person, not a machine. A short session on spotting phishing emails, fake invoices and suspicious links protects you as much as any software. Repeat it every few months, because the tricks keep changing.

What to do if something gets through

No product catches everything, so it's worth knowing your first steps before you need them. Disconnect the affected device from the network, don't pay any ransom demand without advice, call your IT provider or security vendor and report the incident to the relevant authority. You'll recover far faster if backups are tested and your team knows who to call. It's a short plan, but writing it down today means nobody's guessing in a panic.

Do you make business antivirus and endpoint security? Tool makers can ask to be considered for a featured place on this list.

My plain advice on antivirus for a small business

Don't rely on whatever came pre-installed on each laptop. Choose one business product, put it on every device and manage it from one place. Consistency beats having the most advanced features on half your machines.

Think about who'll respond when something goes wrong. If nobody in your business has the time or skills, choose a product with a managed service, or ask your IT provider to watch the dashboard for you. Remote staff matter too, as my piece on business network security with a VPN explains.

Frequently asked questions

What is the best antivirus for small business?

It depends on your size and skills. Sole traders can use simple products, while offices with sensitive data may want managed detection and response.

Is free antivirus enough for a business?

Free home products usually lack the central management and support a business needs. Check each vendor's business options.

How common are cyber incidents for small businesses?

The NCSC says 1 in 2 small businesses suffer a cyber incident every year.

What's the difference between antivirus and endpoint security?

Antivirus blocks known threats on a device. Endpoint security adds central management, wider protection and often detection and response.

Do I need antivirus on phones?

If staff use phones for work email and files, protect and manage them like any other device.

What else should a small business do besides antivirus?

Secure email and key accounts, keep devices updated and back up your data, as the NCSC recommends.