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Cybersecurity · head to head

Beyond Identity vs Tenable Nessus

Beyond Identity logo

Beyond Identity

Cybersecurity

Phishing-resistant passwordless authentication with device trust enforced at every login

From
On request
Rated
-
Full reviewWebsite
Tenable Nessus logo

Tenable Nessus

Cybersecurity

Network vulnerability scanner

From
Free
Rated
-
Full reviewWebsite

The short version

  • Only Tenable Nessus has a free tier, so it costs nothing to try first.
  • Each has a real cost: Beyond Identity it is an authentication layer, not an identity provider, so you keep and keep paying for Okta or Entra ID underneath and the combined per-user cost is roughly double a single-vendor approach.; 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: Beyond Identity covers Device-bound credentials, Tenable Nessus covers Network scanning.
  • Prices and features above were last checked on 1 September 2026.

Where they differ

Only the attributes on which Beyond Identity and Tenable Nessus actually diverge.

Attributes where Beyond Identity and Tenable Nessus differ
AttributeBeyond IdentityTenable Nessus
Starting priceOn requestFree
Pricing modelquotesubscription
Free tierNoYes
PlatformsWindows, macOS, Linux, iOS, AndroidWindows, Linux, Macos, Cloud
FoundedUnknown2002

Identical on both: 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 Beyond Identity

  • Device-bound credentials
  • Continuous device posture
  • No shared secrets
  • Identity provider integration
  • Secure developer signing
  • Administrator policy engine

Only in Tenable Nessus

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

What people use each for

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

Beyond Identity

  • An organisation that suffered a breach through MFA push fatigue and needs a factor that cannot be socially engineerednot Tenable Nessus
  • A software company enforcing that code is only signed from a managed device with current patchesnot Tenable Nessus
  • A firm with contractors on unmanaged laptops that must meet posture requirements before reaching internal systemsnot Tenable Nessus
  • A security team wanting to remove passwords from the helpdesk workload rather than adding another factor on topnot Tenable Nessus

Tenable Nessus

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

Where each one falls short

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

Beyond Identity

  • It is an authentication layer, not an identity provider, so you keep and keep paying for Okta or Entra ID underneath and the combined per-user cost is roughly double a single-vendor approach.
  • Every device that authenticates needs the platform authenticator installed, which makes onboarding contractors, third parties and shared kiosks awkward and sometimes impossible.
  • Pricing is quoted per user with no published rates, so buyers cannot benchmark it against the increasingly capable passkey support now included in identity provider base licences.
  • Losing all enrolled devices requires an administrative recovery path, and organisations that design that path poorly reintroduce a social-engineering target at the helpdesk.
  • Legacy applications that only speak passwords or older protocols need a federation shim or stay outside the policy, so coverage is rarely complete in an estate with old systems.

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

Beyond Identity

On request
  • Secure Access Platform$undefined/year
    • Per-user annual subscription quoted by seat count
    • Deployed alongside an existing identity provider rather than replacing it
    • Device posture integrations with major EDR and MDM vendors included

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 Beyond Identity if

  • You need device-bound credentials.
  • You work on Windows, macOS, Linux, iOS, Android.
  • You also want continuous device posture.
Beyond Identity 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 Beyond Identity or Tenable Nessus better?
Neither clearly leads. Beyond Identity starts at On request and Tenable Nessus at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Beyond Identity or Tenable Nessus?
Tenable Nessus has a free tier; the other does not. Paid plans start at On request for Beyond Identity and Free for Tenable Nessus.
Does Beyond Identity or Tenable Nessus run on more platforms?
Beyond Identity runs on Windows, macOS, Linux, iOS, Android. Tenable Nessus runs on Windows, Linux, Macos, Cloud.
Can I use Tenable Nessus for free?
Yes. Tenable Nessus has a free tier, so you can try it without paying. Beyond Identity starts at On request.
What is Beyond Identity best used for?
Beyond Identity is most often used for an organisation that suffered a breach through mfa push fatigue and needs a factor that cannot be socially engineered, a software company enforcing that code is only signed from a managed device with current patches, a firm with contractors on unmanaged laptops that must meet posture requirements before reaching internal systems, a security team wanting to remove passwords from the helpdesk workload rather than adding another factor on top. Of those, an organisation that suffered a breach through mfa push fatigue and needs a factor that cannot be socially engineered and a software company enforcing that code is only signed from a managed device with current patches are not what Tenable Nessus is typically brought in for.
What can Beyond Identity do that Tenable Nessus cannot?
Beyond Identity covers Device-bound credentials, Continuous device posture, No shared secrets, Identity provider integration. Tenable Nessus covers Network scanning, Vulnerability detection, Configuration assessment, Malware detection.

Answered from the vendors’ own pages

Beyond Identity: Does it replace Okta or Entra ID?

No. It sits in front of them as the authentication method. Budget for both.

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
Beyond Identity: What happens when a user loses their laptop?

They authenticate from another enrolled device, or go through an administrative recovery flow. Designing that recovery well matters, because it is the weakest point.

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
Beyond Identity: Is it different from passkeys?

The credential mechanism is similar in spirit. The difference is enforcing device security posture at every authentication, which standard passkeys do not do.

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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