Intruder vs Tenable Nessus
Side-by-side comparison of features, pricing, ratings, and alternatives.
Intruder is a cloud-based exposure management platform that helps organizations identify and remediate security vulnerabilities before attackers can exploit them. It combines AI-assisted penetration testing, attack surface monitoring, cloud security posture management, and vulnerability scanning into a single platform. The platform performs daily configuration checks across AWS, Azure, and Google Cloud, scans external infrastructure, web applications, APIs, and container images, and includes GregAI, a virtual security analyst that helps automate triage and remediation guidance. Intruder is used by more than 3,000 companies and supports compliance frameworks including SOC 2, ISO 27001, PCI DSS, HIPAA, and DORA.
Nessus is Tenable's vulnerability assessment scanner, used to discover vulnerabilities and misconfigurations across operating systems, network devices, and applications. It covers over 117,000 CVEs through more than 319,000 detection plugins, with roughly 100 new plugins released weekly, and prioritizes findings using CVSS v4, EPSS, and Tenable's own VPR risk scoring. The product ships with 450+ pre-built policy and compliance audit templates and guided remediation workflows to help teams act on results rather than just collect them. Nessus Professional and Nessus Expert are sold as annual subscriptions, with Expert adding external attack surface scanning and expanded web application scanning.
- Combines vulnerability scanning, CSPM, and attack surface management in one platform
- Daily automated checks reduce manual scanning effort
- Strong compliance framework mapping
- Free trial available to test the platform
- Industry-standard, widely trusted scanner
- Extensive and frequently updated CVE/plugin coverage
- Multiple risk-scoring models for prioritization
- Flexible deployment including low-cost hardware
- Pricing is not published and requires direct contact
- AI pentesting is not a full substitute for manual penetration testing
- Best value requires integrating cloud accounts across AWS/Azure/GCP
- Annual pricing is a significant investment for small teams
- Web app scanning is limited by FQDN count on base tier
- Requires security expertise to interpret and act on results effectively
More alternatives & similar tools
Alternatives to Intruder
View all →Vulnerability assessment scanner that finds, prioritizes, and helps remediate security weaknesses.
Alternatives to Tenable Nessus
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Vulnerability management platform behind the widely used OpenVAS scanning engine, from appliance to free edition.
The Verdict
AI-generated from listing dataIntruder offers a cloud‑based, all‑in‑one exposure platform with AI features but opaque pricing; Tenable Nessus provides a deep, industry‑standard scanner with known subscription costs and broader deployment flexibility.
Key differences
- •Deployment model: Intruder is SaaS only; Nessus runs as a desktop/app on any hardware.
- •Scope of coverage: Intruder bundles vulnerability scanning, CSPM, and attack‑surface monitoring; Nessus focuses on OS/network/web scanning with 117k+ CVEs.
- •Pricing transparency: Intruder requires contact for pricing; Nessus lists a paid subscription model.
- •Integration focus: Intruder integrates directly with AWS, Azure, GCP; Nessus offers API access but no specific cloud integrations listed.
Pricing & value
Nessus states a paid subscription, while Intruder hides pricing behind a contact request.
Ease of use / learning curve
Intruder is a cloud SaaS with a free trial and AI‑assisted triage, requiring less local setup than Nessus.
Features & depth
Intruder combines continuous scanning, CSPM, attack‑surface monitoring, and AI pentesting in one platform.
Integrations & ecosystem
Nessus provides an API and can run on any hardware, while Intruder lists only AWS, Azure, Google Cloud.
Collaboration
Intruder includes GregAI virtual analyst and real‑time threat alerts to aid team coordination.
Scalability
SaaS delivery lets Intruder scale across unlimited cloud accounts; Nessus depends on local hardware capacity.
Support
Both offer support options—Intruder via demo/customer support, Nessus via documentation, training, and optional advanced support.
Choose Intruder if…
Teams needing a unified, cloud‑native exposure platform with AI assistance and are comfortable contacting sales for pricing.
Choose Tenable Nessus if…
Organizations that want a proven, deep vulnerability scanner with known subscription costs and flexible on‑premise deployment.
Common questions
How is pricing disclosed for each tool?
Intruder requires you to contact sales for pricing; Tenable Nessus lists a paid subscription model.
Can I run the scanner on my own hardware?
Nessus can be installed on desktops or low‑cost devices; Intruder is only available as a cloud SaaS.
Which product covers cloud security posture management?
Intruder includes daily CSPM checks for AWS, Azure, and Google Cloud; Nessus does not list CSPM features.