Search for the Best antivirus, and you'll mostly get consumer products built for home PCs. That's not much use if you're responsible for securing a business. This guide covers what IT professionals are deploying for Australian businesses in 2026, cross-checked against the three independent labs that matter: AV-TEST, AV-Comparatives and SE Labs, so you can see the products, not just marketing claims.
What Independent Antivirus Labs Test Software
Vendor marketing claims are one thing; independent testing is another. Three labs carry real weight in the industry:
1. AV-TEST
A German lab that continuously evaluates business and consumer endpoint products against real-world threats, scoring protection, performance, and usability out of 6 points each (18 total). Products scoring 17.5+ earn AV-TEST's "Top Product" award.
2. AV-Comparatives
An Austrian lab running a Real-World Protection Test and dedicated enterprise security test series, including endpoint prevention and response testing, with results published regularly and freely available.
3. SE Labs
A UK lab that runs full attack-chain tests, simulating targeted and public web/email attacks against SMB and enterprise products, scoring both protection and total accuracy (which accounts for false positives, not just detection).
Antivirus vs EDR vs MDR: What's the Difference?
By 2026, the line has mostly blurred, but the distinction still matters when you're comparing prices:
- Antivirus: detects and blocks known and behavioural malware on a device.
- EDR (Endpoint Detection and Response): adds deeper telemetry and the ability to investigate and respond to an incident after initial detection, not just block it.
- MDR (Managed Detection and Response): a human team, either the vendor's or a partner like Cspro, actively monitoring and responding to alerts on your behalf, essential if nobody in-house can watch alerts around the clock.
The Tools IT Professionals Recommend Most in 2026
1. Microsoft Defender for Business
Included with Microsoft 365 Business Premium at no extra cost, or available as a standalone add-on for around $3/user/month on Basic or Standard plans. AV-TEST's business Windows testing has awarded it strong scores for protection, performance, and usability. Best fit for: businesses already on Microsoft 365 Business Premium that want real EDR without adding another vendor.
2. Bitdefender GravityZone
Consistently top-tier in AV-TEST and SE Labs certification cycles, with a genuinely approachable cloud management console. Pricing runs roughly $57-$96 per device per year depending on tier (Small Business, Business Security, Business Security Premium). Best fit: SMBs of roughly 20-300 endpoints wanting enterprise-grade detection without a dedicated security team.
3. ESET PROTECT
Known for a lightweight agent with minimal performance impact, full EDR in the Advanced and Complete tiers, and strong cross-platform support (Windows, macOS, Linux). AV-TEST's 2025 testing recorded 100% protection against malware and web threats for ESET PROTECT Advanced. Pricing starts around $42-$68 per device per year. Best fit: mixed-OS environments and businesses with compliance requirements.
4. Sophos Endpoint / Intercept X
Scored strongly in SE Labs' 2026 SMB report (97% protection, 99% total accuracy) and is commonly paired with Sophos MDR for businesses that don't have anyone in-house to monitor alerts. Pricing runs roughly $28-$79 per device per year. Best fit: businesses that want a managed, human-monitored response option built in.
5. CrowdStrike Falcon
The benchmark enterprise EDR platform for many security teams, with a cloud-native, lightweight agent. Pricing is at the higher end, roughly $60-$185 per device per year. Best fit: larger or higher-risk organisations that need enterprise-grade detection and response and have (or plan to have) a security team or MDR partner to act on it.
6. Norton Small Business
A more straightforward option for very small offices that want solid protection without configuring an EDR console. AV-TEST's business Windows results have scored a perfect 6/6/6 across protection, performance, and usability. Best fit: a small office that wants dependable protection without the complexity of a full endpoint security platform.
Comparison
| Tool | Indicative Price | Best For | EDR Included |
| Microsoft Defender for Business | $3/user/mo (or bundled) | Already on Microsoft 365 Business Premium | Yes |
| Bitdefender GravityZone | $57-$96/device/yr | 20-300 seat SMBs wanting enterprise-grade detection | Higher tiers |
| ESET PROTECT | $42-$68/device/yr | Mixed-OS environments, compliance needs | Advanced/Complete tiers |
| Sophos Endpoint/Intercept X | $28-$79/device/yr | Businesses wanting managed, human-monitored response | Yes (+ MDR option) |
| CrowdStrike Falcon | $60-$185/device/yr | Larger or higher-risk organisations | Yes |
| Norton Small Business | Contact vendor | Very small offices wanting simplicity | No |
Why Free Antivirus Isn't Right for Business
Free consumer antivirus products (Avast Free, AVG Free, Avira Free and similar) are licensed for non-commercial, personal use only. Running them on business endpoints breaches that license and can also void cyber insurance coverage if a claim reveals unlicensed software was protecting the affected systems. Beyond the licensing risk, free antivirus offers no centralised management, no audit trial, no policy enforcement, and no business support contract, all of which matter the moment something goes wrong.
How Much Does Business Antivirus Cost?
Indicative pricing across the market runs from around $3/user/month (Microsoft Defender for Business, bundled or as an add-on) up to $185/device/year for enterprise-grade platforms like CrowdStrike Falcon. Most SMB-focused tools with solid lab results (Bitdefender GravityZone, ESET PROTECT, Sophos Intercept X) fall in the $30-$95/device/year range. Figures are typically quoted in USD by vendors; confirm exact AUD pricing with your reseller or IT provider.
Conclusion
The best antivirus for your business depends on what you're already running and who's watching the alerts. If you're on Microsoft 365 Business Premium, start with Defender for Business. If you need a dedicated platform, Bitdefender GravityZone and ESET PROTECT both back up their marketing with strong, current lab results. And if nobody in-house has time to monitor endpoint alerts, the tool matters less than having a managed service behind it.
