Autonomous Penetration Testing Vendors Compared

Autonomous penetration testing platforms run attack chains without a human operator. They find a weakness, exploit it, use what they gain to move further, and report the path. They are genuinely useful, and some of them are very good at what they do. They are also not the same thing as a manual penetration test, and audits and enterprise customers still notice the difference.

This guide covers the main vendors, described from their own product pages, how to judge them, and where a manual test still fits. We sell manual testing at published prices, so we have a point of view. We have kept each vendor description to what the vendor says about itself, and we do not quote anyone else’s prices.

What autonomous pentesting is

Three kinds of product get called “automated penetration testing.” They are different.

	Vulnerability scanner	Autonomous pentest platform	Manual penetration test
What it does	Matches what it sees against known vulnerabilities	Exploits weaknesses and chains them into attack paths	A person attacks with intent, context and judgment
Proves exploitability	No	Yes, for what it knows how to exploit	Yes
Chains findings	No	Yes, within its playbooks or models	Yes, including novel chains
Understands your business logic	No	Rarely	Yes
How often	Daily or weekly	As often as you run it	Annually and after major changes
Who operates it	Your team or a provider	Usually your team	The testing firm

The concept is covered in more depth in our guide to automated vs manual penetration testing. This page is about the vendors.

How we judged them

We looked at each platform against the questions a buyer should ask:

• Exploit validation. Does it prove a finding is exploitable, or only report that it might be?
• Attack chaining. Does it use one foothold to find the next, the way an attacker would?
• Safety controls. What does it do in production, what does it never do, and how is it stopped?
• Coverage. Internal network, external surface, cloud, web applications, APIs. No platform covers everything equally.
• Evidence. Does the output work as audit evidence, and who is the independent party?

The vendors

Horizon3.ai NodeZero

Horizon3.ai describes NodeZero as a way to “autonomously find, fix, and validate” real risks, with unlimited pentests. It covers internal networks, external assets, cloud, Kubernetes, Active Directory and web applications. Internal tests run from a Docker host or a virtual appliance inside your network, with no agents, and can run with or without credentials. It chains weaknesses as it pivots through the network and has a quick re-test to confirm a fix.

Fits: IT and security teams that want to run internal network tests on their own schedule, often, and verify fixes quickly.

Pentera

Pentera describes its product as an exposure validation platform that tests security controls against real attack techniques. Separate modules cover the internal network, the external attack surface and cloud identity and hybrid environments. It tests for weak and leaked credentials, emulates named ransomware families, and says it runs complete attack kill chains while staying safe for production.

Fits: larger security teams that want to validate controls continuously across a big environment. We compare the two models directly in Invadel vs Pentera.

XBOW

XBOW calls itself an autonomous offensive security platform focused on web applications and APIs: point it at a URL and it explores the application like an attacker. Its emphasis is proof. It says every finding comes with a working exploit, and that it was the first autonomous system to rank first on HackerOne, in June 2025.

Fits: application teams that want frequent testing of web apps and APIs for exploitable technical flaws.

Hadrian

Hadrian describes itself as attack surface management plus agentic pentesting. It continuously discovers internet-facing assets, including domains, subdomains, certificates, IP addresses and shadow assets, then uses autonomous agents to test them with emulated real-world exploits. Findings come with business context, exploit steps and a priority score.

Fits: companies with a large or fast-changing external footprint that want to know what is exposed and exploitable, continuously.

Vonahi Security vPenTest

Vonahi Security, acquired by Kaseya in 2023, sells vPenTest as an automated network penetration testing platform for internal and external networks. It is marketed to managed service providers and internal IT teams, with testing monthly or as new threats emerge, and reporting aimed at PCI, HIPAA, SOC 2 and cyber insurance requirements.

Fits: MSPs and small IT teams that want a recurring network test across many client environments.

Breach and attack simulation is a different category

Breach and attack simulation (BAS) tools run individual attack techniques against your defenses to check whether your endpoint protection, email filtering and monitoring detect or block them. They measure controls. They do not try to break in end to end. Some underwriters treat them as a separate way to validate controls: AIG’s ransomware questionnaire, for example, lists BAS software and an annual penetration test as different answers to the same question. Our guide to cyber insurance and penetration testing covers what those forms ask.

What autonomous tools do well

• Repeatable internal attack paths. Credential reuse, relay attacks, weak service accounts and the well-known routes to Domain Admin, checked as often as you like.
• Known exploits at scale. Across hundreds or thousands of hosts, faster than any person.
• Fast re-runs. Fix something on Tuesday and confirm it on Wednesday.
• Coverage between annual tests. A new exposure is caught in days rather than at next year’s engagement.

If you have none of this, it is a real improvement, and so is a validated scanning program. Our own vulnerability scanning is $1,500 for up to 250 devices, with false positives removed by an analyst.

Where they stop

• Authorization across roles and tenants. Whether user A can read user B’s data, or one customer can reach another’s, depends on what the application is supposed to do. A platform rarely knows.
• Business logic. Skipping a payment step, replaying an approval, abusing a workflow. There is no exploit module for “this process can be run backward.”
• Chained application flaws. A minor information leak plus a weak reset flow plus a permissive internal API. Each is minor to a tool. Together they are a breach.
• People. Phishing, voice pretexts and help-desk social engineering are where many intrusions begin, and they are outside what these platforms test.
• Independence. If your own team runs the platform, the results come from you. For some audits and customers, that is the problem.

Network-focused platforms are built for hosts, credentials and Active Directory, not for your customer-facing application’s access model. That is usually the finding that matters most in a SaaS company’s report. Our guide to SAST vs DAST vs IAST covers the application tooling side, and our list of web application penetration testing companies covers the manual side.

What SOC 2, PCI DSS and enterprise reviews expect

• SOC 2. The Trust Services Criteria do not require a penetration test; they list it as one example of a separate evaluation under CC4.1. Auditors commonly ask for one as evidence for the Security criteria, and enterprise customers reading your report ask for one too. Software your own team operates does not provide third-party independence.
• PCI DSS. Requirement 11.4.1 asks for a methodology that includes application-layer testing covering the flaw classes in Requirement 6.2.4 and network-layer testing of the components that support network functions. The internal and external tests in 11.4.2 and 11.4.3 must be done by a qualified tester with organizational independence. A network-only platform does not cover the application layer, and whether any tool’s output is enough is your QSA’s decision. Our guide to PCI DSS penetration testing requirements goes through each sub-requirement.
• Enterprise security reviews. Questionnaires ask for the date, scope and provider of your last third-party penetration test. A platform report from your own account answers a different question.

Pairing a platform with a manual test

Many teams run both. The platform covers breadth and frequency. The manual test covers depth once or twice a year and produces the independent evidence. At Invadel, each is a fixed price agreed in writing, with a free retest:

• Web application penetration testing from $5,200, with accounts in every role.
• API penetration testing from $4,000.
• Internal network penetration testing from $6,000, for the Active Directory and segmentation paths a platform might not reach.
• External network penetration testing from $4,200.

Hand the tester your platform’s latest results during scoping. The manual hours then go to what the platform cannot do instead of repeating what it already found. Every price is on our pricing page. If you are weighing a pentest platform sold on credits or subscriptions instead, see our pentest platform comparison.

Questions to ask any autonomous vendor

1. What does it exploit in production, and what will it never do? Get the list in writing.
2. How is a run stopped, and what does it clean up? Ask about accounts, files and changes it leaves behind.
3. What credentials does it capture, where are they stored, and who can see them?
4. Does it test the authorization model of our application with more than one role? If not, plan a manual test for that.
5. What does the report look like, and will our auditor accept it? Ask for a sample and show it to your auditor before you buy.
6. Who is the independent party? If your team runs it, decide how you will answer the third-party testing question.
7. How are false positives handled? Proof of exploitation should mean few, but ask how they are flagged.

Frequently asked questions

Is autonomous pentesting the same as automated pentesting? The terms overlap. “Autonomous” usually means the platform decides its next step from what it found, rather than running a fixed scan. Both are software, and both stop at the limits above.

Can an autonomous platform replace our annual penetration test? For your own visibility, it can cover a lot between tests. For audit and customer evidence, most teams still need a manual test by an independent firm, especially for applications.

Do you use automation? Yes, as a tool in the tester’s hands. Scanners and scripts map the surface quickly. The findings that decide whether you are safe come from a person reading the application and the network.

Fixed price, fixed scope, free retest. Scope your test and get a written price within one business day.