Orca Security vs Tenable Nessus comparison

Orca Security and Tenable are both solutions in the Vulnerability Management category. Orca Security is ranked #14 with an average rating of 8.6, while Tenable is ranked #1 with an average rating of 8.4. Orca Security holds a 4.1% mindshare in VM, compared to Tenable’s 8.0% mindshare. Additionally, 100% of Orca Security users are willing to recommend the solution, compared to 98% of Tenable users who would recommend it.

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Executive SummaryUpdated on Oct 9, 2024

Tenable Nessus and Orca Security compete in the cybersecurity tools category. Orca Security seems to have the upper hand due to its agentless architecture, cloud focus, and rapid support.

Features: Tenable Nessus offers extensive vulnerability scanning, predictive prioritization, and an integration ability that supports risk management across environments. Orca Security's SideScanning technology allows agentless data collection, ranking and prioritizing vulnerabilities, and providing detailed cloud-level visibility.

Room for Improvement: Tenable Nessus could improve in reporting customization, intuitive interfaces, and reducing false positives. Orca Security could expand its on-premise integration and visualization capabilities, automatic remediation features, and enhance communication on updates.

Ease of Deployment and Customer Service: Tenable Nessus is mostly deployed on-premises, and feedback on technical support is mixed. Orca Security is deployed in the cloud with minimal setup and is praised for ease of use and quick support response.

Pricing and ROI: Tenable Nessus is competitively priced for smaller organizations and presents a strong ROI through its management capabilities. Orca Security is generally more expensive but justifies cost with its feature suite and value in reducing the need for multiple tools.

To learn more, read our detailed Orca Security vs. Tenable Nessus Report (Updated: September 2025).

Buyer's Guide

Orca Security vs. Tenable Nessus

September 2025

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Review summaries and opinions

We asked business professionals to review the solutions they use. Here are some excerpts of what they said:

Categories and Ranking

Zafran Security

Mindshare comparison

As of September 2025, in the Vulnerability Management category, the mindshare of Zafran Security is 1.0%, up from 0.1% compared to the previous year. The mindshare of Orca Security is 4.1%, down from 5.2% compared to the previous year. The mindshare of Tenable Nessus is 8.0%, down from 12.4% compared to the previous year. It is calculated based on PeerSpot user engagement data.

Vulnerability Management Market Share Distribution
Product	Market Share (%)
Tenable Nessus	8.0%
Orca Security	4.1%
Zafran Security	1.0%
Other	86.9%

Vulnerability Management

Featured Reviews

Israel Cavazos Landini

Associate Director IT Security Operations at a pharma/biotech company with 10,001+ employees

Weekly insights and risk analysis facilitate informed security decisions

I appreciate the weekly insights Zafran provides, which include critical topics for networks and IT security, allowing us to evaluate which insights apply to our environment. The organization score feature is valuable to keep the leadership team updated on how our infrastructure fares security-wise. The applicable risk level versus base risk level feature is beneficial because prior to Zafran, we only used the base risk level, but now understand that risk depends on the asset itself. Zafran is an excellent tool.

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CHINTAN MEHTA

Cloud Security Automation Engineer at a financial services firm with 10,001+ employees

Consolidating security tools with comprehensive cloud visibility

The documentation for Orca Security could be improved. The compliance framework also needs enhancements, especially concerning integrations with other tools like ServiceNow's vulnerability modules, which are not as mature as expected. It should also increase its capability to ingest data from other security tools like CloudSight for endpoint detection and provide real-time monitoring.

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HarshBhardiya

SOC Engineer at Just Dial Limited

Provided increased visibility across the organization's servers

The user interface of Tenable Nessus feels outdated and could be more user-friendly. Additionally, the documentation is not well-organized, which can be confusing when searching for solutions or specific information related to Tenable Nessus Professional. The reporting feature could be improved by allowing users to create their own templates instead of relying on predefined ones.

Read full review

Quotes from Members

We asked business professionals to review the solutions they use. Here are some excerpts of what they said:

Pros

"We saw benefits from Zafran Security almost immediately after deploying it."

"Zafran is an excellent tool."

"Zafran has become an indispensable tool in our cybersecurity arsenal."

"We are able to see the real risk of a vulnerability on our environment with our security tools."

"Overall, we have seen about eighty-seven percent reduction of the number of vulnerabilities that require urgency to remediate, specifically the number of criticals."

"There are so many valuable features that I could list, but one that I appreciate is the PCI DSS compliance report."

"The visibility Orca provides into my environment is at the highest level... When I dropped them into the environment, from the very get-go I had more insight into the risks in my environment than I had had during the entire two and a half years I had been here."

"One of the valuable features of Orca Security is its design and options that allow flexible filtering and user-friendly visualization."

"The best features of Orca Security include its ability to perform a lot of security controls without requiring any installation of agents, making it very easy to set up."

"Once our organization is configured, any cloud account under that organization is automatically detected in Orca Security, along with all the assets associated with it."

"I find Orca Security's CIEM feature invaluable, as it focuses on entitlement and posture management, identifying assets with older OS versions, and asset misconfiguration."

"I recommend Orca Security to others looking for a cloud security solution due to its seamless integration and side-scanning technology that does not hamper cloud asset performance."

More Orca Security pros

"Among the most valuable features are scanning for vulnerabilities and the reporting. The reporting templates are okay. I like that I can see all the hosts with different vulnerabilities."

"The most valuable feature of Tenable Nessus is the GUI and user-friendliness. Additionally, the environment is easy to work with."

"It does exactly what you expect it to do, and its pricing is great. We couldn't really ask for a better deal."

"The trial version is very good for testing whether it will suit your needs."

"It notifies us of vulnerabilities as they arise, allowing us to respond quickly without manual intervention."

"The support has been really cooperative."

"Tenable Nessus is an absolutely stable and fantastic product."

"The solution is great for scanning servers."

More Tenable Nessus pros

Cons

"Initially, we were somewhat concerned about the scalability of Zafran due to our large asset count and the substantial amount of information we needed to process."

"I think the ability to have some enhanced reporting capabilities is something they can improve on, as they have good reports but we have asked for some specific reporting enhancements."

"The dashboarding and reporting functionality of Zafran Security is an area that definitely could use some improvements."

"We are PCI DSS compliant, so we need to scan our environment externally with tools vetted by the PCI DSS organization. Orca doesn't scan the environment externally. It only scans what's currently in the cloud."

"The presentation of the data in the dashboard is a little bit chaotic."

"I would like to see an option to do security checks on a code level. This is possible because they have access to all of the code running in the cloud provider, and combining their site-scanning solution with that would be a nice add-on."

"I would be happy if they offered more automatic remediation options. They're working on that, but the more the better. For example, if they want you to harden a server, they would offer a hardening script that would be more aware of what's going on."

"The documentation for Orca Security could be improved."

"The interface can be a bit cranky and sometimes takes a lot of time to load."

"I think Orca could give me more alerts. It could give me a dashboard with all the specific types of alerts I want to see for the day. It should just be one click."

"They can expand a little bit in anti-malware detection. While we have pretty good confidence that it's going to detect some of the static malware, some of the detections are heuristics. There could be a growth in the library from where they're pulling their information, but we don't get a lot of those alerts based on the design of our products. In general, that might be an area that needs to be filled since they offer it as a service within it."

More Orca Security cons

"The reports are okay, but the interface is a bit difficult to navigate in some cases."

"The scalability of Tenable Nessus is good. However, it could be more flexible."

"In Nessus Professional, the main drawback was that we could have a single-user login password. So it could be better in terms of security."

"Tenable Nessus could improve the reporting by adding some dashboards. The reports are a hassle at this time. Tenable.io has more detailed reports. Having a better dashboard that can show where the vulnerabilities are and be categorized would be helpful. We then could present them to upper management for a deep overview of our network posture which they do not see."

"Multiple user access would be an area for improvement from a user-access perspective. A role-based access control feature would be great because at present, there is a limitation with only one account. If that account gets compromised or gets locked, then we will encounter problems."

"Tenable Nessus is not feasible for a large company."

"Nessus' reporting could be more user-friendly."

"The pricing point has increased significantly in recent years. The product's pricing has roughly tripled within the last couple of years, making us reconsider renewing the license for the scanner."

More Tenable Nessus cons

Pricing and Cost Advice

Information not available

"The pricing depends on how many assets you have running in your cloud and how many environments you have. If you have a dev environment, test environment, and a production environment then it's really important that you have coverage for all of them."

"We have a total of 25 licenses for this solution. The solution is on a pay-and-you-use model."

"The most expensive solution is Palo Alto. They claim to be very robust. The next most expensive is Wiz, followed by Orca and all the rest."

"Its license is a bit expensive."

"Orca is very competitive when compared to the alternatives and is not the most expensive in the market, that's for sure."

"Orca Security is cheaper compared to other solutions in the same space."

"It is the cost of the visibility that you get. When you really sit down and think about what do you need to do to secure an environment with a low impact on the business, and you take a look out into the world, I think this tool is well justified around cost."

"I think their pricing model is aligned with market demand. Of course, Orca could probably better align their pricing model with the needs of smaller businesses as well as some larger-scale enterprises with millions of assets. But in all fairness, I think the Orca sales team has been accommodating and ensured that we're happy with the pricing."

More Orca Security pricing and cost advice

"Its price is high for Libya. The companies here in Libya don't have the awareness of and a good budget for cybersecurity services. If you want them to go for a product, you need to provide something different. This differentiation is related to the price. They should give about 40% to 45% discount per person on the current cost."

"Tenable Nessus needs to be licensed. We own a license for the security center and that license is charged by the number of IP addresses that you can scan. You're allowed to have as many scanners as you want and there's no license for the number of scanners. We have a bunch of Nessus scanners out there, and as long as we're comfortable with staying under that IP address limit, that's really all we have to be concerned about."

"The newer tools are quite pricey. There is a case of some fine tuning that can be done in terms of licensing. The IP based licensing that is offered makes the tool very expensive. If they want the IT industry to adopt it, the price should be looked at."

"I would like to see better discounts."

"The solution is expensive."

"It has a fair cost and very good cost-benefit ratio."

"The product pricing is dynamic and varies based on the specific needs of each project and customer."

"Cost-wise, it's an affordable tool."

More Tenable Nessus pricing and cost advice

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Top Industries

By visitors reading reviews

Financial Services Firm

11%

Computer Software Company

10%

Manufacturing Company

Government

Computer Software Company

15%

Financial Services Firm

12%

Manufacturing Company

10%

University

Computer Software Company

12%

Financial Services Firm

11%

Manufacturing Company

10%

Government

10%

Company Size

By reviewers

Large Enterprise

Midsize Enterprise

Small Business

No data available

By reviewers
Company Size	Count
Small Business	9
Midsize Enterprise	7
Large Enterprise	5

By reviewers
Company Size	Count
Small Business	38
Midsize Enterprise	19
Large Enterprise	35

Questions from the Community

What is your experience regarding pricing and costs for Zafran Security?

Since we stood Zafran Security up in our private cloud, we handle the maintenance on our side. As we opted not to use...

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What needs improvement with Zafran Security?

In terms of areas for improvement, Zafran Security is doing a really great job as a new and emerging company. Oftenti...

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What is your primary use case for Zafran Security?

My use cases for Zafran Security revolve around two primary areas. One is around vulnerability management and priorit...

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What do you like most about Orca Security?

It's for protection. It's an agentless tool. We don't need to install anything at a customer's premises. We can just ...

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What needs improvement with Orca Security?

I really love the way Orca Security worked. A potential improvement could be additional security features for the two...

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What is your primary use case for Orca Security?

We used Orca Security ( /products/orca-security-reviews ) for about two to three months until I left the company. The...

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How would you choose between Rapid7 InsightVM and Tenable Nessus?

You have full visibility across cloud, network, virtual, and containerized infrastructures with Rapid7 Insight VM. Yo...

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What's the difference between Tenable Nessus and Tenable.io Vulnerability Management?

Tenable Nessus is a vulnerability assessment solution that is both easy to deploy and easy to manage. The design of ...

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What do you like most about Tenable Nessus?

We have around 500 virtual machines. Therefore, we conduct monthly scans and open tickets for our developers to addre...

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Comparisons

Wiz Code vs Zafran Security

Compared 37% of the time

Vulcan Cyber vs Zafran Security

Compared 16% of the time

Tenable Vulnerability Management vs Zafran Security

Compared 9% of the time

Qualys VMDR vs Zafran Security

Compared 7% of the time

More Zafran Security Competitors

Wiz vs Orca Security

Compared 29% of the time

Microsoft Defender for Cloud vs Orca Security

Compared 8% of the time

Prisma Cloud by Palo Alto Networks vs Orca Security

Compared 5% of the time

Upwind vs Orca Security

Compared 4% of the time

AWS Security Hub vs Orca Security

Compared 3% of the time

More Orca Security Competitors

Rapid7 InsightVM vs Tenable Nessus

Compared 12% of the time

Qualys VMDR vs Tenable Nessus

Compared 11% of the time

Microsoft Defender Vulnerability Management vs Tenable Nessus

Compared 8% of the time

Tenable Vulnerability Management vs Tenable Nessus

Compared 8% of the time

Amazon Inspector vs Tenable Nessus

Compared 6% of the time

More Tenable Nessus Competitors

Product Reports

Buyer's Guide

Zafran Security

August 2025

Download Zafran Security product report

Buyer's Guide

Orca Security

August 2025

Download Orca Security product report

Buyer's Guide

Tenable Nessus

August 2025

Download Tenable Nessus product report

Overview

Zafran Security integrates with existing security tools to identify and mitigate vulnerabilities effectively, proving that most critical vulnerabilities are not exploitable, optimizing threat management.

Zafran Security introduces an innovative operating model for managing security threats and vulnerabilities. By leveraging the threat exposure management platform, it pinpoints and prioritizes exploitable vulnerabilities, reducing risk through immediate remediation. This platform enhances your hybrid cloud security by normalizing vulnerability signals and integrating specific IT context data, such as CVE runtime presence and internet asset reachability, into its analysis. No longer reliant on patch windows, Zafran Security allows you to manage risks actively.

What are the key features of Zafran Security?

Threat Exposure Management: Utilizes existing tools to prioritize vulnerabilities and manage threats.
Integrative Analysis: Combines security data with IT context for precise vulnerability management.
Real-time Risk Reduction: Enables immediate risk management without waiting for patches.
Hybrid Cloud Compatibility: Functions across diverse cloud environments for comprehensive security.

What benefits can users expect from Zafran Security?

Improved Security: Enhances protection by efficiently identifying and mitigating risks.
Cost Efficiency: Reduces unnecessary patching expenses by confirming non-exploitable vulnerabilities.
Time Savings: Frees developers to focus on root causes by handling immediate threats.
Comprehensive Insight: Offers a holistic view of security threats and vulnerabilities.

In industries where security is paramount, such as finance and healthcare, Zafran Security provides invaluable protection by ensuring that only exploitable vulnerabilities are addressed. It allows entities to maintain robust security measures while allocating resources efficiently, fitting seamlessly into existing security strategies.

Zafran Security

Orca Security is the pioneer of agentless cloud security that is trusted by hundreds of enterprises globally. Orca makes cloud security possible for enterprises moving to and scaling in the cloud with its patented SideScanning™ technology and Unified Data Model. The Orca Cloud Security Platform delivers the world's most comprehensive coverage and visibility of risks across AWS, Azure, Google Cloud and Kubernetes.

At Orca Security, we’re on a mission to make it fast, easy, and cost effective for organizations to address critical cloud security issues so they can operate in the cloud with confidence.

Key Platform Features:

Agentless: Complete, centralized coverage of the entire cloud estate, without the need for installing and configuring agents or layering together multiple siloed tools. Full visibility of cloud misconfigurations, vulnerabilities, workload protection, malware scanning, image scanning, file integrity monitoring and more.
Asset Inventory: Get a complete inventory of all your public cloud assets, including detailed information on installed OSes, software, and applications, as well as data and network assets such as storage buckets, Virtual Private Clouds (VPCs), and Security Groups.

Attack Path Analysis: Visualize attack vectors to critical assets or crown jewels. See which assets are susceptible to lateral movement, assume roles, privilege escalation, and more.

Risk Prioritization: Prioritize the 1% of risks that matter the most, based on impact scores. Secure the vulnerabilities and misconfigured targets (critical assets) and eliminate the potential risks residing on the attack paths to those targets.
Cloud Threat Detection: Monitor for malicious activity within your entire cloud estate. Be aware of detected threats, user behavior anomalies and more.

Breach Forensics: Log every change and all activity into a central repository for investigation procedures to confirm or deny entry and compromises within the cloud estate.
Cloud To Dev (Shift Left): Orca’s built-in shift left capabilities enables DevOps to focus more security attention earlier in the CI/CD pipelines. Security teams are able to trace a production risk (misconfiguration or vulnerability) directly to the original source code repository from which it came, even down to the exact line of code that is at the root of the identified risk.
Compliance: Choose from over 60 preconfigured compliance frameworks, cloud security best practices, CIS Benchmarks, or design and build your own compliance framework for fast and continuous reporting.
Security Score: The Orca Security Score is found on Orca’s Risk Dashboard and is updated daily. The overall score is calculated based on performance in the following five categories - Suspicious Activity, IAM, Data at Risk, Vulnerable Assets, and Responsiveness. Since the scores are percentage based and not raw numbers, you can objectively make comparisons to other organizations within your industry or business units of different sizes. In addition to reporting to senior management, the Orca Security Score can help with internal self-monitoring, as a way of measuring risk mitigation efforts, to know where to focus efforts, and track progress.

Orca Security Benefits

Consolidate technologies to reduce costs and complexity:

“The more I can get out of this one solution, the better. I see Orca as the tool where we get all cloud-related security data.” - Joshua Scott, Head of Security and IT | Postman

Avoid costly breaches:

"I look at proactive asset discovery, configuration management, and vulnerability management as being able to find a vulnerability before the bad guys do and being able to deal with it before something exploits it. This is what Orca does for us." - Doug Graham, CSO & CPO | Lionbridge

Increase team productivity and efficiency by focusing on high-value activities and solving the 1% of risks that matter most:

"Orca is unique in that it locates vulnerabilities with precision and delivers tangible, actionable results – without having to sift through all the noise." - Aaron Brown, Senior Cloud Security Engineer | Sisense

Quick Time-to-Value with Immediate ROI:

"Orca told us we could have some visibility within 5 or 10 minutes, and I thought, ‘There’s no way.’ Well, I was wrong. They really did it." - Thomas Hill, CISO | Live Oak Bank

Reduce MTTR and remove operational friction:

“We can’t ask developers things like ‘Did you think about security? When you start a new VM on AWS, can you please let me know so I’m able to scan it? Can you please deploy an agent on that machine for me?’ We need a better way to work. Orca provides that better way by eliminating organizational friction.” - Erwin Geirnaert, Cloud Security Architect | NG Data

Orca Security

Tenable Nessus provides an efficient vulnerability management system with swift deployment and comprehensive scanning capabilities, making it an ideal choice for organizations seeking to enhance their security posture through effective threat detection and mitigation strategies.

Renowned for its top-tier vulnerability detection, Tenable Nessus offers a robust platform that integrates effortlessly across systems, enhancing threat management through automation, real-time monitoring, and customizable scanning options. Its broad asset coverage, including network devices and applications, coupled with ease of deployment, positions it as a go-to option for risk assessment and compliance. Organizations value its extensive reporting features and database, although they suggest enhancements in reporting formats and false positive detection. A more intuitive interface, improved cloud support, and competitive pricing models are sought after to cater to evolving enterprise needs.

What are the key features of Tenable Nessus?

Comprehensive Vulnerability Detection: Identifies security gaps across systems and platforms.
Remedy Recommendations: Provides actionable insights for vulnerability fixes.
Predictive Prioritization: Helps in focusing on critical vulnerabilities first.
Seamless Integration: Compatible with diverse platforms for cohesive threat management.
Automation Capabilities: Streamlines routine scans and reports.

What benefits and ROI should users look for?

Fast Setup: Quick deployment that saves time and resources.
Cost-Effective: Affordable pricing supports budget-conscious cyber strategies.
Real-Time Monitoring: Offers continuous oversight of system health.
Extensive Reports: Detailed insights enhance decision-making processes.

In industries such as finance, healthcare, and tech, Tenable Nessus is implemented for scanning internal and external networks, identifying risks, and ensuring data protection compliance. Organizations conduct regular scans to detect security vulnerabilities in servers and databases, leveraging its capabilities to strengthen their security frameworks while managing cloud infrastructures and enterprise networks efficiently.

Tenable

Sample Customers

Information Not Available

BeyondTrust, Postman, Digital Turbine, Solarisbank, Lemonade, C6 Bank, Docebo, Vercel, and Vivino

Bitbrains, Tesla, Just Eat, Crosskey Banking Solutions, Covenant Health, Youngstown State University

Buyer's Guide

Orca Security vs. Tenable Nessus

September 2025

Free Report: Orca Security vs. Tenable Nessus

Find out what your peers are saying about Orca Security vs. Tenable Nessus and other solutions. Updated: September 2025.

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