Tenable Nessus vs Duo Security
Side-by-side comparison for 2026
Tenable Nessus
Vulnerability assessment and management
7.6/10
$2,400/yrFree trialfreemium
Try Tenable Nessus →VS
Duo Security
Multi-factor authentication and access security
8.4/10
FreeFree planfreemium
Try Duo Security →Our Verdict
🏆 Duo Security wins on overall editorial score (8.4/10)
Duo Security scored higher across our editorial dimensions. That said, the best tool depends on your specific use case — check the breakdown below.
Editorial Scores
Pricing
Tenable Nessus
$2,400/yrFree trialfreemium
Duo Security
FreeFree planfreemium
Pros
✓ Tenable Nessus
- ✓Market-leading vulnerability detection
- ✓Comprehensive reporting
- ✓Strong compliance support
✓ Duo Security
- ✓Free tier available
- ✓Excellent user experience
- ✓Strong fraud detection
Cons
✗ Tenable Nessus
- High licensing costs
- Requires security expertise to interpret results
✗ Duo Security
- Premium features require upgrades
- Mobile app-dependent for some features