26th February 2026
Microsoft Defender vs. Paid for Antivirus Software
Without proper protection your computer and personal data is at risk from viruses, malware and other online threats. One of the easiest ways you can reduce that risk is to use antivirus and anti-malware software. However with there being so many different security options available it can be difficult to know which is the best option for you. In this blog we compare Microsoft Defender with paid for antivirus software to help you decide which option suits you best.
Microsoft Defender
Microsoft Defender is antivirus software that is packaged with Windows for free. It offers real-time protection from threats such as viruses, malware and other malicious software. As it is built in to Windows it is designed to provide baseline protection to all Windows devices.
Pros of Microsoft Defender
- Integrated into Windows – Microsoft Defender is installed by default on all Windows devices, so there is no setup required. This is quite useful for some people as it reduces the chance of configuring the settings incorrectly.
- Lightweight and less intrusive – Microsoft Defender is efficient and runs quietly in the background. It doesn’t have constant pop-ups that other paid for antivirus software is known for.
- Browser and download protection – It integrates with web browsers to offer protection against malicious websites and other online threats.
- It’s free – There’s no subscription, no hidden fees and no surprises. Microsoft Defender offers full virus protection and runs smoothly in the background as soon as you get your laptop.
Cons of Microsoft Defender
- Limited cross-platform coverage – Microsoft Defender is only free to Windows users. Therefore, if you have a mixture of Windows, Macs, phones and tablets in your house Microsoft Defender won’t protect everything for free.
- Limited Phishing attack protection – It can help prevent some phishing attacks however more certificated attacks may be missed.
- Not all features are enabled by default – Some advanced protection features are disabled by default and have to be manually enabled by the user. This means most users won’t get the full protection Microsoft Defender offers.
Paid for Antivirus
Paid for antivirus software such as Bitdefender, CrowdStrike and Avast provide core antivirus and anti-malware features. However they often have extra security features bundled into their packages. These antivirus software are installed on top of Windows to help improve your device’s level of security.
Pros of Paid for Antivirus
- Extra layers of protection – Many paid for antivirus software offer stronger web protection and anti-phishing protection. They warn you before you click on anything risky or enter your details on suspicious websites.
- More features in one package – Depending on the provider you may get extra security features to help keep you better protected. Some of these features include password managers, webcam protection, microphone protection, multi-device coverage and more.
- Access to Support – Some paid for antivirus include access to customer support if something looks wrong or you need help with warnings and alerts.
Cons of Paid for Antivirus
- Subscription costs and renewal increases – Many providers offer a discounted first year but then significantly increase the renewal cost.
- Performance impact on older machines – Some antivirus software can slow down older Windows devices especially during full system scans or when they are installing additional background tools.
- Pop-ups and upsells – Some antivirus providers can have too many pop-ups. These pop-ups can include notifications, prompts and sales messages. This can cause frustration for users as they can be distracting and obnoxious.
What Should you choose?
There isn’t one right answer for everyone. Microsoft Defender is a good option for most users as long as you keep Windows up to date, only install reputable software and take basic precautions when online (For example not visiting malicious website).
However, for anyone who is more concerned about security or is interested in having extra layers of protection. A paid for antivirus may be worthwhile to protect your Windows device and personal data. Investing in a good antivirus gives you piece of mind as your Windows device and personal files are safe and secure.
In our experience Bitdefender is a great choice of antivirus software. It offers strong protection, is easy to use, and it is lightweight on your device. It can also provide helpful website and anti-phishing warnings to help protect you from online threats.
If you are unsure on what is the best option for you, get in contact with us, we are happy to help!