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Head-to-head · Antivirus Software

Microsoft Defender for Business vs Bitdefender Total Security

  • Updated Oct 2026
  • Both researched from official sources
  • 5 checks side by side
Higher score Microsoft Defender for Business #1 in Antivirus Software 9.4/10 30-day trial Free trial✓ 1 of 3 features Visit Microsoft
Bitdefender Total Security #3 in Antivirus Software 9.2/10 30-day trial Free trial✓ 3 of 3 features Visit Bitdefender

Microsoft Defender for Business leads on 0 checks, Bitdefender Total Security on 1, and 4 are even. Who comes out ahead on the 5 yes/no, price and count checks where we have data for both products. The editor score weighs everything else too.

Our verdict

  • Highest scoreMicrosoft Defender for Business · 9.4/10
  • Free trialboth
  • Most featuresBitdefender Total Security · 3 of 3

Microsoft Defender for Business scores higher on our rubric for antivirus software: 9.4 against 9.2 out of 10; our editors rank them #1 and #3.

Bitdefender Total Security leads on device limit: 25 devices versus 5 devices.

Microsoft Defender for Business is the better fit for small businesses needing managed endpoint security. Bitdefender Total Security is the better fit for families wanting multi-device security.

  • Microsoft Defender for Business fits best

    Small businesses needing managed endpoint security

  • Bitdefender Total Security fits best

    Families wanting multi-device security

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Side by side

Feature Microsoft Defender for Business 9.4/10 Visit ↗ Bitdefender Total Security 9.2/10 Visit ↗
At a glance
Editor score 9.4 9.2
Ranking #1 in Antivirus Software #3 in Antivirus Software
Best for Small businesses needing managed endpoint security Families wanting multi-device security
Pricing model Paid Paid
Starting price $3/user/mo $59.99/device/yr
Free plan — —
Free trial 30 days 30 days
Free trial length 30 days · card required 30 days · no card needed
Money-back guarantee 7 days 30 days
Deployment Cloud, Mobile Desktop, Mobile
Platforms Web, Windows, macOS, iOS, Android Windows, macOS, iOS, Android
Support Docs Docs · 24/7
Built for Small business, Mid-market Solo, Small business
Features Microsoft Defender for Business 1/3 · Bitdefender Total Security 3/3
Ransomware protection ✓ ✓
Parental controls Not checked yet ✓ (best)
Password manager Not checked yet ✓ (best)
Specs
Protection scope Complete security Complete security
Device limit 5 devices 25 devices (best)
Supported platforms Windows, macOS, iOS, Android Windows, macOS, Android, iOS
Our review
Pros
  • EDR includes automatic attack disruption and automated remediation
  • Protects Windows, macOS, iOS, and Android devices
  • Includes vulnerability management, APIs, SIEM, and RMM integrations
  • Protects Windows, macOS, Android, and iOS devices
  • Combines ransomware remediation, firewall, and anti-phishing
  • Family plan covers 25 devices and includes parental controls
Cons
  • The listed price requires annual billing
  • Coverage is limited to 300 users and five devices per user
  • Server protection is available only as an add-on
  • There is no free plan
  • The included VPN is limited to 200 MB per day
  • Parental controls require a Family plan
Our verdict

Microsoft Defender for Business is an endpoint security solution for small and medium-sized organizations with up to 300 users. It combines next-generation antivirus with ransomware attack disruption, vulnerability management, attack…

Read the review →

Bitdefender Total Security is a consumer security suite for Windows PCs, Macs, Android devices, and iPhones or iPads. It combines real-time anti-malware protection with web attack prevention, anti-phishing, firewall and network threat…

Read the review →
  1. Microsoft Defender for BusinessAntivirus Software 9.430-day trial
  2. Bitdefender Total SecurityAntivirus Software 9.230-day trial

Strengths and trade-offs

  • Microsoft Defender for Business — where it wins

    • EDR includes automatic attack disruption and automated remediation
    • Protects Windows, macOS, iOS, and Android devices
    • Includes vulnerability management, APIs, SIEM, and RMM integrations

    Where it doesn't

    • The listed price requires annual billing
    • Coverage is limited to 300 users and five devices per user
    • Server protection is available only as an add-on
  • Bitdefender Total Security — where it wins

    • Protects Windows, macOS, Android, and iOS devices
    • Combines ransomware remediation, firewall, and anti-phishing
    • Family plan covers 25 devices and includes parental controls

    Where it doesn't

    • There is no free plan
    • The included VPN is limited to 200 MB per day
    • Parental controls require a Family plan
  • Microsoft Defender for Business9.4/10 · 30-day trial

    A focused endpoint security subscription with EDR and centralized controls for small businesses.

    Visit MicrosoftFull verdict →
  • Bitdefender Total Security9.2/10 · 30-day trial

    A broad security suite for families protecting PCs, Macs, phones, and tablets.

    Visit BitdefenderFull verdict →

More comparisons

Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026

Last updated · How we research and update