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Fortra's Alert Logic MDR vs Tenable Nessus comparison

 

Comparison Buyer's Guide

Executive SummaryUpdated on Oct 9, 2024

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

Fortra's Alert Logic MDR
Ranking in Vulnerability Management
34th
Average Rating
8.0
Reviews Sentiment
6.9
Number of Reviews
11
Ranking in other categories
SOC as a Service (3rd), Managed Detection and Response (MDR) (18th)
Tenable Nessus
Ranking in Vulnerability Management
2nd
Average Rating
8.4
Reviews Sentiment
6.0
Number of Reviews
87
Ranking in other categories
No ranking in other categories
 

Mindshare comparison

As of February 2026, in the Vulnerability Management category, the mindshare of Fortra's Alert Logic MDR is 0.6%, up from 0.3% compared to the previous year. The mindshare of Tenable Nessus is 5.1%, down from 10.3% compared to the previous year. It is calculated based on PeerSpot user engagement data.
Vulnerability Management Market Share Distribution
ProductMarket Share (%)
Tenable Nessus5.1%
Fortra's Alert Logic MDR0.6%
Other94.3%
Vulnerability Management
 

Featured Reviews

reviewer2191746 - PeerSpot reviewer
President at a tech services company with 11-50 employees
It's a highly mature, competitively priced solution that provides total visibility into your ecosystem. FORTRA's Alert Logic has the only Cybersecurity Platform that integrates XDR+WAF+VM+DLP in one.
Alert Logic offers total visibility into the client's IT ecosystem. The solution's intrusion detection system inspects 100 percent of the network packets and installs universal agents on all physical and virtual servers for log collection. Alert Logic also aggregates logs of the client's various 3rd Party security tools into a single pane of glass. All of the analytics from those data feeds got to a 24/7 SOC with sophisticated resources. Alert Logic has massive threat intelligence resources to provide additional context to the incident response declarations. They do all the heavy lifting for clients who lack the technology and resources to operate their own SOC. The client is solely responsible for the incident response component. The macro analytics resides on Alert Logic's cloud. You have the ECM response and business application team on the client side. Everything works in tandem, which is the only way you can deal with the advanced threats we face today, especially the ransomware families. If you don't respond in minutes, you're in trouble.
MohammedJaffir - PeerSpot reviewer
Founder at Cipheroot
Has enabled me to reduce false positives and perform deep credential auditing with seamless integrations
I mostly use the configuration audit feature for the audit configuration as a scan policy, and I will use it for credential audit, which helps me scan credentials access such as local administrator or root access, performing a deeper and more accurate check of local configuration settings and file systems, making it a highly recommended feature. Regarding integration capabilities, we can integrate Tenable Nessus with SIM tools such as Splunk, IBM QRadar, and Azure Sentinel, as well as with ticketing systems such as ServiceNow, Jira, and Slack. There is no complexity as it is very easy to integrate everything. In terms of the reporting feature, while vulnerability scanning can throw some false positives, Tenable Nessus has very few, achieving a reduction of 75% to 80% false positives with manual analysis needed. We can generate standard Nessus reports that typically include host summaries and vulnerabilities by host and plugin, alongside solutions and remediation recommendations. The main benefits I get from Tenable Nessus are complete asset inventory and comprehensive attack surface management, allowing us to prioritize vulnerabilities based on risk, focusing on true risk and threat path analysis.

Quotes from Members

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

Pros

"While I still have on-premises appliances, I can remotely monitor everything from the cloud, and Alert Logic's ease-of-access features have helped me streamline my workflow and reduce implementation time."
"The initial setup is pretty straightforward."
"It is a very stable product."
"It improves our security. Before, we didn't have anything scanning our containers. We had software scanning all the physical servers, but we had nothing to scan our containers. With Alert Logic, we can do that."
"The installation and configuration were slick."
"The solution was consistently available, and I cannot recall any instances where it was down."
"The most valuable aspect of Alert Logic is its technology platform. They have SOCs in the US and Europe, giving them global visibility of the threat landscape. They detect and respond to threats in minutes. Their biggest value is human expertise. You're being attacked by a human, and you cannot respond to it unless you have a human on the other side. They have the human and technological resources to respond."
"We receive infrastructure security warnings from it. So, we know what is going on and what needs to be addressed."
"Quick assessments, compliance scores, and results are provided without having to do agents."
"The most valuable feature is the breadth of vulnerabilities that it finds. It's able to find across a lot of different platforms and operating systems. It's also able to combine local testing with network-based testing."
"The most valuable features of Tenable Nessus include its ease of access and quick usability."
"The most valuable feature is the installation of Tenable which is incredibly easy."
"Tenable integrates well with other solutions such as SIEM and batch management."
"The features I personally like include host discovery."
"I like this solution because it is complete. It can scan and check many types of vulnerabilities. It can also check for compliance."
"The most valuable feature of Tenable Nessus is the support it provides for any new vulnerabilities quickly."
 

Cons

"Could be more of an endpoint protector."
"The setup process was complex."
"We'd like to have triggered alerts sent to us so we see errors quicker."
"This product needs to mature more. While it is a good product, there are some areas where it needs work."
"Alert Logic needs to expand its SOCs to serve more markets, such as the Middle East and Asia. There should be infrastructure that covers more time zones. The company should also develop an EDR that is natively integrated into their solution. Currently, a client must buy another EDR solution like CrowdStrike or Sophos. I think Alert Logic is developing this. Built-in email security could also be developed and integrated."
"I would like more data on the alert payload. It would be good to have the ability to customize the alert payload to add whatever data that we want on there. Right now, it is a bit limited."
"They have ideas and email you whatever they find, but they don't have a dedicated security team who will work on an attack or a specific security instance."
"I would like to see it do initial scans and start capturing data, which it will truly analyze, not just be a reporting system saying, "Here is an email. Here is an email. Here is an email.""
"Online learning could be a bit better."
"We have had some false positives in the past, which we hope can improve in the future."
"They need more flexible pricing."
"It would be nice for the professional module to include some of the reports available in the expert module."
"They could make their reporting a little better."
"Remediation needs improvement."
"In terms of what could be improved, I would say its reporting portion."
"Tenable Nessus application device assessment is one of the top tools. However, in the application security assessment, there are other tools that provide better, and more accurate findings."
 

Pricing and Cost Advice

"Its pricing is very reasonable considering what you get for what you pay. There is quite a good value there. Its licensing is also very logical. They've got the licensing price points at a reasonable level. It is on a monthly license but a yearly contract. There are no additional costs to the standard licensing fees."
"Almost any product that is on the AWS Marketplace is super easy to subscribe to."
"Our ROI would probably be zero. We don't even use it. It sits in there. We get emails and just delete them. Around the world, we don't even use it."
"Price of the solution was very reasonable considering the size of our organization at the time, and so it worked out perfectly."
"Alert Logic has better competitive pricing than some of its competitors."
"I would like to see better discounts."
"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."
"The product is free."
"Nessus Manager is not an expensive product. It has its limitations, but the pricing reflects that. We have a yearly subscription."
"The price of Tenable Nessus could improve, it is expensive."
"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."
"The solution has a single price for unlimited assets."
"Its pricing is great and can't be improved. It is very cheap. It is less than 2,000 pounds a license, and you can't really ask for more. It has unlimited IPs and unlimited scans. There are no particular pricing constraints. The only additional cost is the inherent cost of the people to actually review the actual scans."
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Top Industries

By visitors reading reviews
Computer Software Company
17%
Manufacturing Company
14%
Performing Arts
6%
Educational Organization
5%
Financial Services Firm
10%
Government
10%
Manufacturing Company
10%
Computer Software Company
10%
 

Company Size

By reviewers
Large Enterprise
Midsize Enterprise
Small Business
By reviewers
Company SizeCount
Small Business4
Midsize Enterprise2
Large Enterprise6
By reviewers
Company SizeCount
Small Business39
Midsize Enterprise19
Large Enterprise35
 

Questions from the Community

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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. You can easily prioritize vulnerabilities using attacker analytics. Overall, Rapid...
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 the program is such that if a company should desire to handle the installation t...
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 address identified vulnerabilities. These scans cover the servers, other network equi...
 

Also Known As

Alert Logic MDR, Alert Logic Managed Detection and ResponseAlert Logic Threat Manager, Alert Logic Cloud Defender, Critical Watch FusionVM
No data available
 

Overview

 

Sample Customers

Information Not Available
Bitbrains, Tesla, Just Eat, Crosskey Banking Solutions, Covenant Health, Youngstown State University
Find out what your peers are saying about Fortra's Alert Logic MDR vs. Tenable Nessus and other solutions. Updated: December 2025.
881,665 professionals have used our research since 2012.