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Cybersecurity · head to head

IDnow vs Tenable Nessus

IDnow logo

IDnow

Cybersecurity

Identity verification and qualified electronic signature for regulated European markets

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: IDnow agent-led video identification costs several times an automated check and depends on agent availability, so peak-time queues push abandonment up at exactly the moment conversion matters.; 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: IDnow covers VideoIdent, Tenable Nessus covers Network scanning.
  • Prices and features above were last checked on 1 September 2026.

Where they differ

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

Attributes where IDnow and Tenable Nessus differ
AttributeIDnowTenable Nessus
Starting priceOn requestFree
Pricing modelquotesubscription
Free tierNoYes
PlatformsWeb, iOS, Android, APIWindows, 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 IDnow

  • VideoIdent
  • AutoIdent
  • eSign
  • eID and NFC
  • Bank identification
  • EU data processing

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.

IDnow

  • A German bank opening regulated accounts where BaFin requires a recognised identification methodnot Tenable Nessus
  • An insurer needing a qualified electronic signature that will survive challenge in a European courtnot Tenable Nessus
  • A telecom operator meeting national SIM registration identity rules across several EU statesnot Tenable Nessus
  • A lender wanting automated checks for low-risk applicants and video identification only for high-value casesnot Tenable Nessus

Tenable Nessus

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

Where each one falls short

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

IDnow

  • Agent-led video identification costs several times an automated check and depends on agent availability, so peak-time queues push abandonment up at exactly the moment conversion matters.
  • Pricing is quoted with an annual volume commitment, so the accreditation advantage comes with a floor you pay whether or not you use it.
  • The product is optimised for European regulatory regimes, so buyers verifying users in North America, Asia or Africa will find coverage and cost less competitive than global specialists.
  • Qualified electronic signature is a separate licence from identity verification, which surprises buyers who assumed the accredited identity check made the signature capability included.
  • Integration for the regulated flows is heavier than a simple SDK drop-in because the compliant journey, including consent and recording requirements, constrains the user experience you can build.

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

IDnow

On request
  • IDnow Platform$undefined/year
    • Per-identification pricing that differs sharply between automated and agent-led methods
    • Annual volume commitment typically required
    • Qualified electronic signature licensed separately

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 IDnow if

  • You need videoident.
  • You work on Web, iOS, Android, API.
  • You also want autoident.
IDnow 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 IDnow or Tenable Nessus better?
Neither clearly leads. IDnow 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, IDnow or Tenable Nessus?
Tenable Nessus has a free tier; the other does not. Paid plans start at On request for IDnow and Free for Tenable Nessus.
Does IDnow or Tenable Nessus run on more platforms?
IDnow runs on Web, iOS, Android, API. 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. IDnow starts at On request.
What is IDnow best used for?
IDnow is most often used for a german bank opening regulated accounts where bafin requires a recognised identification method, an insurer needing a qualified electronic signature that will survive challenge in a european court, a telecom operator meeting national sim registration identity rules across several eu states, a lender wanting automated checks for low-risk applicants and video identification only for high-value cases. Of those, a german bank opening regulated accounts where bafin requires a recognised identification method and an insurer needing a qualified electronic signature that will survive challenge in a european court are not what Tenable Nessus is typically brought in for.
What can IDnow do that Tenable Nessus cannot?
IDnow covers VideoIdent, AutoIdent, eSign, eID and NFC. Tenable Nessus covers Network scanning, Vulnerability detection, Configuration assessment, Malware detection.

Answered from the vendors’ own pages

IDnow: Why choose it over a cheaper automated vendor?

Because in some European regimes the cheaper vendor is not legally permitted for the transaction. This is an eligibility question, not a quality one.

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
IDnow: Is the electronic signature included?

No. Qualified electronic signature under eIDAS is licensed separately from identity verification.

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
IDnow: Where is the data processed?

In European data centres, which is a requirement rather than a preference for many of its regulated customers.

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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