Orca Security vs Tenable Nessus Comparison: Reviews, Features, Pricing & Alternatives in 2026

Detailed side-by-side comparison to help you choose the right solution for your team

Updated Apr 2026 8 min read

Orca Security

0.0 (0 reviews)

Orca Security provides a cloud-native application protection platform that uses SideScanning technology to identify vulnerabilities, malware, and misconfigurations across your entire multi-cloud environment without using any installed agents.

Starting at --
Free Trial 30 days
VS

Tenable Nessus

0.0 (0 reviews)

Nessus is a vulnerability assessment solution providing deep-point-in-time scans to identify security flaws, misconfigurations, and malware across your modern IT infrastructure, including cloud, containers, and traditional assets.

Starting at Free
Free Trial 7 days

Quick Comparison

Feature Orca Security Tenable Nessus
Website orca.security tenable.com
Pricing Model Custom Freemium
Starting Price Custom Pricing Free
FREE Trial ✓ 30 days free trial ✓ 7 days free trial
Free Plan ✘ No free plan ✓ Has free plan
Product Demo ✓ Request demo here ✓ Request demo here
Deployment saas saas on-premise desktop
Integrations AWS Microsoft Azure Google Cloud Platform Slack Jira ServiceNow Splunk PagerDuty GitHub Terraform ServiceNow Splunk AWS Microsoft Azure Google Cloud Platform Jira Slack IBM QRadar
Target Users mid-market enterprise small-business mid-market enterprise
Target Industries
Customer Count 0 0
Founded Year 2019 2002
Headquarters Portland, USA Columbia, USA

Overview

O

Orca Security

Orca Security gives you full visibility into your cloud estate without the headache of installing and managing agents on every resource. By using patented SideScanning technology, you can detect vulnerabilities, malware, misconfigurations, and lateral movement risks across AWS, Azure, Google Cloud, and Kubernetes. It essentially creates a read-only snapshot of your cloud's block storage to find risks that traditional tools often miss.

You can secure your entire development lifecycle from code to production while maintaining a single prioritized view of your most critical alerts. This helps your security team focus on the 1% of risks that actually matter rather than drowning in thousands of disconnected notifications. It is built for mid-market to enterprise organizations that need to scale their security operations across complex, multi-cloud environments quickly and efficiently.

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Tenable Nessus

Nessus helps you identify and fix security vulnerabilities before attackers can exploit them. You can scan your entire environment—including cloud instances, web applications, and traditional network hardware—to find missing patches, software flaws, and configuration errors. It provides a clear view of your attack surface so you can prioritize the most critical risks to your business.

You can choose between different versions depending on your needs, ranging from a free version for educators and students to professional and expert versions for security consultants. It simplifies the complex task of vulnerability assessment with pre-built templates and automated reporting. Whether you are securing a small office or a complex hybrid-cloud environment, you can rely on its extensive plugin library to stay protected against the latest threats.

Overview

O

Orca Security Features

  • Agentless SideScanning Gain 100% visibility into your cloud workloads and data without installing any agents or impacting your system performance.
  • Unified Risk Prioritization Focus on the most dangerous threats by seeing how vulnerabilities, misconfigurations, and identities combine to create attack paths.
  • Cloud Detection and Response Identify active attacks and suspicious behavior in real-time so you can stop breaches before they spread through your network.
  • Shift Left Security Scan your container images and IaC templates during the build process to catch security flaws before they reach production.
  • Compliance Management Automate your compliance audits for frameworks like PCI-DSS, SOC2, and HIPAA with continuous monitoring and one-click reporting.
  • Sensitive Data Discovery Locate and protect your most valuable data assets across your cloud storage to prevent accidental exposure or theft.
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Tenable Nessus Features

  • Pre-Built Scan Templates. Start scanning immediately using over 450 pre-configured templates for common audits like PCI-DSS and HIPAA compliance.
  • Live Results. Perform offline vulnerability analysis against your scan history to find new threats without running a new scan.
  • Cloud Infrastructure Scanning. Assess your cloud-native assets and identify misconfigurations in AWS, Azure, and Google Cloud environments easily.
  • Customizable Reporting. Create tailored reports in multiple formats like HTML or PDF to share critical security findings with your stakeholders.
  • Web Application Scanning. Identify vulnerabilities in your web applications and APIs to prevent common attacks like SQL injection and cross-site scripting.
  • External Surface Discovery. Find and map your internet-facing assets to understand what an attacker sees when looking at your organization.

Pricing Comparison

O

Orca Security Pricing

T

Tenable Nessus Pricing

Nessus Essentials
$0
  • Scan up to 16 IP addresses
  • High-speed accurate scanning
  • Community support access
  • Standard vulnerability assessment
  • Free for educators and students

Pros & Cons

M

Orca Security

Pros

  • Deployment takes minutes instead of weeks or months
  • Eliminates the performance overhead caused by traditional agents
  • Provides a clear visual map of potential attack paths
  • Consolidates multiple security tools into one single platform

Cons

  • Initial setup of cloud permissions can be complex
  • The high volume of data can feel overwhelming initially
  • Custom reporting options could be more flexible
A

Tenable Nessus

Pros

  • Extremely high accuracy with very low false-positive rates
  • Massive library of plugins updated daily for new threats
  • Easy to set up and run your first scan quickly
  • Detailed remediation instructions help you fix issues faster

Cons

  • Annual subscription cost is high for small businesses
  • Interface can feel dated compared to newer cloud platforms
  • Reporting customization requires a learning curve to master
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