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Cybersecurity · head to head

Malwarebytes vs Tenable Nessus

Malwarebytes logo

Malwarebytes

Cybersecurity

Protects every device, everywhere

From
Free
Rated
-
Full reviewWebsite
Tenable Nessus logo

Tenable Nessus

Cybersecurity

Network vulnerability scanner

From
Free
Rated
-
Full reviewWebsite

The short version

  • Each has a real cost: Malwarebytes pricing page information is incomplete or dynamically loaded, making transparent pricing comparison difficult for potential customers; Tenable Nessus nessus Professional is $4,790 for one year, sold as an annual licence rather than a per scan or usage based fee
  • They diverge on capability: Malwarebytes covers Malware detection & removal, Tenable Nessus covers Network scanning.
  • Prices and features above were last checked on 30 August 2026.

Where they differ

Only the attributes on which Malwarebytes and Tenable Nessus actually diverge.

Attributes where Malwarebytes and Tenable Nessus differ
AttributeMalwarebytesTenable Nessus
Pricing modelfreemiumsubscription
PlatformsWindows, macOS, iOS, AndroidWindows, Linux, Macos, Cloud
Founded20082002

Identical on both: starting price (Free), free tier (Yes), user rating (Not yet rated), category (Cybersecurity).

What each one covers

Drawn from each product's published feature list. An absence here means we hold no record of it - not that the product lacks it.

Only in Malwarebytes

  • Malware detection & removal
  • Ransomware protection
  • Real-time protection
  • Anti-exploit
  • Anti-phishing
  • Browser Guard
  • VPN
  • Brute Force Protection

Only in Tenable Nessus

  • Network scanning
  • Vulnerability detection
  • Configuration assessment
  • Malware detection
  • Compliance checking
  • Cloud security assessment
  • Mobile scanning
  • API access

Both cover

  • Cloud deployment

What people use each for

The jobs each tool is most often brought in to do.

Malwarebytes

  • Budget-conscious users performing manual scans via free versionnot Tenable Nessus
  • Organisations needing real-time malware and ransomware protection via Premium subscriptionnot Tenable Nessus
  • Users combining antivirus with privacy via Premium plus Privacy VPN bundlenot Tenable Nessus

Tenable Nessus

  • Vulnerability scanning of servers, network devices and web applicationsnot Malwarebytes
  • Configuration and compliance auditing against hardening benchmarksnot Malwarebytes
  • Point in time assessments by consultants and penetration testersnot Malwarebytes

Where each one falls short

Documented limitations, not opinions. Every one is a constraint you would hit in normal use.

Malwarebytes

  • Pricing page information is incomplete or dynamically loaded, making transparent pricing comparison difficult for potential customers
  • Specific price amounts for different tiers (Individual, Family, Small business) are not clearly displayed on the main pricing page
  • No mention of free tier or free trial duration on pricing page, unclear what features are included in each tier

Tenable Nessus

  • Nessus Professional is $4,790 for one year, sold as an annual licence rather than a per scan or usage based fee
  • Support beyond the base entitlement costs an extra $400 per year for Advanced Support with 24x365 phone and chat access
  • The on demand training course is a separate $275 purchase for a single person for one year
  • Multi year discounts require paying for two or three years up front

Pricing, plan by plan

Malwarebytes

Free

No published plan breakdown. See the Malwarebytes review.

Tenable Nessus

Free
  • Nessus EssentialsFree
    • Up to 16 ips
    • Network scanning
    • Vulnerability assessment
  • Nessus Professional$2600/year
    • Unlimited targets
    • Enterprise features
    • Advanced analytics
  • Nessus Expert$5200/year
    • All Professional features
    • Cloud integration
    • Advanced reporting

Which should you pick?

Choose Malwarebytes if

  • You need malware detection & removal.
  • You want to start without paying.
  • You work on Windows, macOS, iOS, Android.
  • You also want ransomware protection.
Malwarebytes review

Choose Tenable Nessus if

  • You need network scanning.
  • You want to start without paying.
  • You work on Windows, Linux, Macos, Cloud.
  • You also want vulnerability detection.
Tenable Nessus review

Questions people ask

Is Malwarebytes or Tenable Nessus better?
Neither clearly leads. Malwarebytes starts at Free and Tenable Nessus at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Malwarebytes or Tenable Nessus?
Malwarebytes starts at Free and Tenable Nessus at Free.
Does Malwarebytes or Tenable Nessus run on more platforms?
Malwarebytes runs on Windows, macOS, iOS, Android. Tenable Nessus runs on Windows, Linux, Macos, Cloud.
Can I use Malwarebytes for free?
Both have a free tier, so you can try either at no cost before committing.
What is Malwarebytes best used for?
Malwarebytes is most often used for budget-conscious users performing manual scans via free version, organisations needing real-time malware and ransomware protection via premium subscription, users combining antivirus with privacy via premium plus privacy vpn bundle. Of those, budget-conscious users performing manual scans via free version and organisations needing real-time malware and ransomware protection via premium subscription are not what Tenable Nessus is typically brought in for.
What can Malwarebytes do that Tenable Nessus cannot?
Malwarebytes covers Malware detection & removal, Ransomware protection, Real-time protection, Anti-exploit. Tenable Nessus covers Network scanning, Vulnerability detection, Configuration assessment, Malware detection. Both handle Cloud deployment.

Answered from the vendors’ own pages

Malwarebytes: What is the refund policy for Malwarebytes subscriptions?

Malwarebytes offers a 60-day money back guarantee on all purchases. This allows customers to test the product across their devices (PC, Mac, Android, iOS) with full refund protection if unsatisfied.

Source
Tenable Nessus: What are the three Nessus offerings?

Nessus Essentials is a free introductory offering for educators, students, and career starters, limited to 16 IPs for scanning. Nessus Professional is designed for consultants and SMBs, providing unlimited IT scans across any location. Nessus Expert is the premium offering extending Professional with web application scanning, infrastructure-as-code scanning, and external attack surface assessment up to 5 domains.

Source
Malwarebytes: What platforms does Malwarebytes support?

Malwarebytes works on Windows PC, macOS, Android, and iOS. Multi-platform protection is available across all subscription tiers including Individual, Family, Small business, and Standard single device options.

Source
Tenable Nessus: What OS platforms does Nessus support?

Nessus runs on Debian/Kali Linux, Fedora, FreeBSD, Mac OS X, Red Hat/CentOS, SUSE Linux, Ubuntu, and various Windows versions including Server 2008, 2012, and Windows 7-10.

Source
Malwarebytes: What is included in customer support with Malwarebytes?

Free customer support is included with all Malwarebytes subscription tiers. The product is backed by a 60-day money back guarantee for risk-free purchasing.

Source
Tenable Nessus: Can I use Nessus to scan third-party networks as a consultant?

Yes, Tenable permits you to use Nessus to scan third-party networks. Nessus Professional is ideal for consultants.

Source
Tenable Nessus: Can Nessus perform PCI external scanning?

Yes, you can use Nessus Professional to perform external network scans as required by the PCI DSS 11.2.2 requirement.

Source
Tenable Nessus: What additional features does Nessus Expert provide?

Web application scanning, which is dynamic application security testing (DAST) providing comprehensive visibility and insight into web application security issues; scanning code repositories for vulnerabilities; and assessing external attack surface with subdomain discovery.

Source
Tenable Nessus: What support options exist for Nessus Professional?

Standard Support includes software upgrades, patches, plugin access, and 24x7 support via chat and community portal. Advanced Support adds 24x7 phone access and committed SLAs: P1 less than 2 hours, P2 less than 4 hours, P3 less than 12 hours, P4 less than 24 hours.

Source
Tenable Nessus: How frequently are Nessus plugins updated?

Nessus plugins are updated daily, based on when vendors and security research sites publish new vulnerabilities.

Source
Tenable Nessus: How does licensing work in virtual machine environments?

Whether you are using Nessus in a physical or a virtual environment, the IP addresses or hosts that you are scanning from must be licensed.

Source
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