Skip to content

Microsoft Defender vs. Bitdefender 2023: Which Antivirus is Better for You?

Finding the right antivirus software is crucial for securing your devices and data in today‘s digital world. Two of the top options are Microsoft Defender and Bitdefender, but they approach things differently.

Microsoft Defender is included with Windows 10 and 11 as part of Microsoft 365. Bitdefender offers standalone antivirus available on Windows, Mac, iOS and Android. Both provide excellent protection against malware and viruses, but have key differences in features, pricing, compatibility and usability.

In this detailed comparison, we’ll break down how Microsoft Defender and Bitdefender stack up so you can decide which (if either) is best for your needs. Let’s dive in!

How Bitdefender and Microsoft Defender Compare

Before digging into the specifics, here’s an at-a-glance look at how Bitdefender and Microsoft Defender match up:

Microsoft Defender
  • Built into Windows
  • Focus on Microsoft ecosystem
  • Limited extra features
  • Requires Microsoft 365 subscription


  • Standalone antivirus
  • Broader platform support
  • Lots of bonus utilities
  • Multiple pricing options

Microsoft Defender integrates tightly with Windows itself and other Microsoft services. Bitdefender operates as a separate utility you install, with more cross-platform flexibility.

Both are excellent at protecting against malware. But Bitdefender has more additional tools, while Defender revolves around the Microsoft suite of products.

Now let’s compare them across some key categories.

Malware and Virus Protection

The most vital factor for an antivirus is how well it identifies and blocks the latest threats. You want to keep your devices and data safe from harm.

Based on testing from independent labs like AV-Test and AV-Comparatives, both Microsoft Defender and Bitdefender are top-tier when it comes to malware protection:

Antivirus AV-Test Detection Rate
Microsoft Defender 100%
Bitdefender 100%

As this shows, Microsoft Defender and Bitdefender both earned perfect scores for detecting widespread, prevalent, and zero-day threats in AV-Test‘s most recent evaluations on Windows 10.

They similarly won top awards from AV-Comparatives‘ intensive Real-World Protection Test, which simulates threats you‘d encounter day-to-day:

[insert AV-Comparatives results chart]

Bottom line, both Defender and Bitdefender ace independent lab testing for malware detection. You can trust them to keep your devices secure.

Security Features and Utilities

Beyond basic antivirus scans, security suites often include other utilities for online protection across devices.

Microsoft Defender focuses mainly on core antivirus coupled with integrations for Microsoft apps and services. Bitdefender contains a wider array of extra tools:

Microsoft Defender

  • Integrates with Office 365, OneDrive, Outlook, etc.
  • firewall
  • ransomware protection
  • limited additional features


  • password manager
  • VPN
  • firewall
  • webcam protection
  • ransomware protection
  • device optimization
  • more available features

So while Defender aligns closely with Microsoft offerings, Bitdefender bundles in lots of bonus security tools. These range from secure browsing to identity theft protection.

Ultimately, Bitdefender provides more security features and utilities beyond fundamental antivirus scanning. It offers a more robust package, while Defender focuses on the Microsoft ecosystem.

Platform Compatibility

Microsoft Defender comes preinstalled on Windows 10 and 11 devices and integrates natively with the operating system. It also has apps for other platforms, but they have limited functionality compared to the Windows version.

Meanwhile, Bitdefender supports a wider range of platforms – Windows, MacOS, iOS, Android – with more capabilities across operating systems.

So Bitdefender is better suited for multi-device households, while Microsoft Defender gives the best experience on Windows itself. Bitdefender still fully supports Windows of course, but also caters more to Mac, mobile and other users.

Costs and Purchasing

Since it‘s part of Microsoft 365, you can’t buy Microsoft Defender as a standalone. A Personal Microsoft 365 subscription starts at $99 per year, including Defender.

With Bitdefender, you can choose from good-better-best tiered pricing:

  • Antivirus Plus – starting at $59.99/year
  • Internet Security – starting at $79.99/year
  • Total Security – starting at $99.99/year

Bitdefender offers more flexibility, whether you want affordable antivirus-only protection or a decked out security suite. Microsoft Defender requires a 365 subscription.

Here‘s a pricing comparison table:

[insert Microsoft Defender vs Bitdefender pricing table]

As you can see, Bitdefender gives you multiple options to find the right fit for your budget and needs.

Ease of Use

Since it‘s integrated into Windows 10 and 11, Microsoft Defender operates seamlessly in the background once enabled. No separate app to launch.

Bitdefender still aims to minimize user effort, but does require installing, setting up and opening its app on each device. The process is straightforward however.

Both Microsoft Defender and Bitdefender are designed not to overwhelm users with constant prompts and notifications. They handle threat detection and virus scanning mostly behind the scenes.

Microsoft Defender holds an edge for unobtrusiveness, disappearing into Windows itself. But Bitdefender also runs quietly in autopilot mode after some quick setup.

Customer Support

Security software demands good customer support in case you ever get stuck. Both Microsoft and Bitdefender offer multiple contact options:


  • Phone, email, online ticket support
  • Knowledgeable technicians
  • Positive reviews


  • 24/7 live chat and phone
  • Online knowledge base
  • Quick response times

Support satisfaction appears high for both companies based on client reviews. Either should provide a helpful experience in the event you need assistance.

Which Is Right for You?

Now for the big question: which of these leading antiviruses is better for your needs?

If you already use Microsoft 365, then Microsoft Defender makes sense, integrating tightly with your Windows 10 or 11 experience.

But for most users, Bitdefender is the best overall choice based on independent testing and comparisons:

  • Broader platform support
  • Lower pricing options
  • More security features
  • At least equal malware protection

Of course personal preferences like budget, device usage, and desired utilities factor in. So weigh these key differences as you decide which antivirus is a better match.

Bottom line: both Microsoft Defender and Bitdefender deliver excellent security. But looking at the full packages, Bitdefender comes out ahead for most users and use cases.

Whichever you choose, make sure some form of antivirus is guarding all your devices. Malware and cyberattacks are only growing, so protection is essential. Stay safe!


Streamr Go

StreamrGo is always about privacy, specifically protecting your privacy online by increasing security and better standard privacy practices.