Antivirus:
How To Make the Right Choice to Protect Your Businesss

With so many headlines announcing the latest data breaches, we all want to find that one tool that makes our businesses secure. The problem is that attackers don’t play fair; they use phishing scams, purchase stolen passwords, and employ social engineering attacks to bypass security. However, that doesn’t mean that we can let technical security slip. Traditional antivirus is still essential; it is an important layer in your security stack that blocks known malware and suspicious behavior. Even Microsoft separates antivirus from endpoint detection and response (EDR) because they solve different problems: antivirus tries to prevent infection; EDR detects, investigates, and contains attacks in progress.

For small and medium-sized businesses, the practical approach is simple: keep Microsoft Defender Antivirus on, and either pair it with EDR or a third-party antivirus program, plus strong governance so you’re protected before, during, and after an attack.

EDR or Third-Party Antivirus

While Defender is a strong baseline on Windows, modern attacks don’t always arrive as a single malicious file. That’s why Microsoft separates antivirus from endpoint detection and response. Antivirus focuses on prevention, while EDR looks for suspicious behavior, helps you investigate, and contains attacks already in motion. If you want fuller protection without changing everything else, keep Defender as your antivirus and add an EDR with human monitoring so alerts don’t sit overnight.

When it comes down to it, two practical paths work well for small and mid-sized businesses. The first is Defender plus a managed EDR. This option allows you to keep Defender for day-to-day blocking, and provides an additional layer of protection with a managed EDR service that hunts for threats, triages alerts, and guides containment. EDR providers like Huntress are built for this Microsoft-first approach, enabling you to avoid juggling two antivirus tools while gaining post-breach detection and response capabilities.

But if you already have, or prefer, a third-party antivirus over Defender, you can still add an EDR. Most EDRs will still block and remediate malicious activity even with another vendor’s antivirus set as the primary. That gives you the best of both worlds: the antivirus you like and the post-breach stopping power of an EDR.

When a Third-Party Antivirus is a Better Fit

Third-party business suites still have their place, especially when you need a single console for both Windows and macOS with tighter web filtering, email scanning, and device control, which is particularly beneficial for insurers and auditors. Independent lab results continue to show meaningful differences among vendors in real-world protection and system impact, so if your team needs an easier all-in-one console, a third-party suite can provide a simpler day-to-day experience.

Trend Micro’s Worry-Free Services is a solid choice for SMBs because it combines endpoint protection with cloud email and collaboration security in a clean, cloud console, with an optional XDR add-on for broader visibility. When you’re comparing options, consider independent test results alongside the admin experience your team will actually use.

How to decide without getting overwhelmed

Start with what you already own and how you operate. If you’re standardized on Microsoft 365 and want to minimize tool sprawl, Defender plus managed EDR is a clean, cost-effective stack. If you need a single console that combines web and email protection, device control, and mixed-OS management, a third-party business suite is often the better fit. Either path works, so long as someone is monitoring alerts and empowered to take action.

With Defender plus managed EDR, employees can continue working while Defender blocks known malicious activity in the background. If a phishing attack leads to suspicious behavior, the EDR responds quickly, allowing your team to investigate with clear “do this now” steps, including isolating a device and removing persistence, so the blast radius stays small. On the other hand, a third-party suite allows your security and IT teams to operate from a single cloud console, providing unified policies, web and email protections, device control, and dashboards that make it easy to prove coverage to leadership and auditors. The goal is fewer clicks to deploy, fewer surprises to fix, and faster answers when something trips an alarm.

Still Not Sure What You Need

When it comes to security stacks, Clark Computer Services has the expertise to help you choose the right path and roll it out with policies that match how your business actually works. Give us a call at 301-456-6931 or send an email to [email protected] and see why we are simply the Best Choice in Cybersecurity.