Do you need third-party antivirus on Windows computers?
Since Windows 10, Microsoft has included Microsoft Defender Antivirus as part of the operating system. For many people, this has quietly replaced the need for separate antivirus tools. Defender is built in, always up to date, and works seamlessly across both Windows desktops and laptops. It delivers excellent protection out of the box, without the common drawbacks that third-party antivirus software often brings.
➡️ Want clear guidance on whether your Windows laptops and PCs need extra protection? Book a video call and we’ll help you decide.
Why Microsoft Defender is enough
Microsoft Defender Antivirus is designed to work seamlessly with Windows. Because it’s built in, it already has the deep system access it needs, without the risks that come with installing additional security software. Independent testing consistently shows Defender performing on par with, and often better than, paid alternatives.
With Microsoft Defender, you get:
Real-time protection against viruses, ransomware, and malware.
Lightweight performance that doesn’t slow down your computer.
Automatic updates delivered through Windows Update.
No extra cost, as it’s already included in Windows.
What are the risks of third-party antivirus?
Many third-party antivirus tools require deep hooks into your system to monitor everything that happens on your computer. To do this, they effectively punch holes into Windows to gain access. While this gives them visibility, it also creates potential vulnerabilities. Malware can sometimes exploit these very same “holes” to gain deep-level access.
On top of that, third-party software can:
Slow down your computer.
Interrupt your work with unnecessary alerts.
Come bundled with upsells or unwanted add-ons.
| Benefits | Windows Defender | Third-party AV |
|---|---|---|
| Core protection | ||
| Real-time protection against malware | ||
| Always included and up to date | ||
| Broad signature database | ||
| Performance | ||
| Lightweight with minimal slowdowns | ||
| No extra cost to your business | ||
| Fewer unnecessary alerts & upsells | ||
| System safeguards | ||
| Built into Windows, no extra holes | ||
| Automatic updates via Windows Update | ||
| Integration with Microsoft security features | ||
➡️ Ready to simplify security for your Windows devices? Book a video call and we’ll show you the best setup for your team.
Why we recommend Microsoft Defender
At Kimbley IT, you only get solutions that genuinely help your team. Some IT providers resell third-party antivirus to increase their margins, but we don’t believe in charging you for software you don’t need. Microsoft Defender gives your Windows machines the protection they require, without the drawbacks.
When you partner with us, you can be confident that your team’s devices are protected by best-in-class security that’s already built into Windows. No unnecessary extras, no slowdowns, just straightforward protection that works.
FAQs
Is Microsoft Defender as good as paid antivirus?
Yes. Independent tests regularly show Defender offering protection on par with paid options. For most businesses, it’s more than enough.
Does Microsoft Defender slow down your computer?
No. Because it’s part of Windows, it runs efficiently in the background without hogging system resources.
Do I need to install updates for Defender?
No extra effort is required. Defender updates automatically through Windows Update.
What if my team already has third-party antivirus installed?
In most cases, it’s safe to uninstall. Microsoft Defender will automatically switch on once the third-party software is removed.
Can Defender protect against phishing?
Yes. Microsoft Defender SmartScreen helps block malicious websites, downloads, and attachments to keep your team safe.
Take the next step
Want IT security that’s simple, effective, and built into your Windows computers? Book a video call today.
