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Fortra's Alert Logic MDR vs Tenable Nessus comparison

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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

Zafran Security
Sponsored
Ranking in Vulnerability Management
27th
Average Rating
9.6
Reviews Sentiment
8.1
Number of Reviews
3
Ranking in other categories
Continuous Threat Exposure Management (CTEM) (6th)
Fortra's Alert Logic MDR
Ranking in Vulnerability Management
29th
Average Rating
8.0
Reviews Sentiment
6.9
Number of Reviews
11
Ranking in other categories
SOC as a Service (5th), Managed Detection and Response (MDR) (20th)
Tenable Nessus
Ranking in Vulnerability Management
3rd
Average Rating
8.4
Reviews Sentiment
7.3
Number of Reviews
81
Ranking in other categories
No ranking in other categories
 

Mindshare comparison

As of May 2025, in the Vulnerability Management category, the mindshare of Zafran Security is 0.6%, up from 0.0% compared to the previous year. The mindshare of Fortra's Alert Logic MDR is 0.4%, up from 0.2% compared to the previous year. The mindshare of Tenable Nessus is 9.8%, down from 13.2% compared to the previous year. It is calculated based on PeerSpot user engagement data.
Vulnerability Management
 

Featured Reviews

Israel Cavazos Landini - PeerSpot reviewer
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.
reviewer2191746 - PeerSpot reviewer
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.
HarshBhardiya - PeerSpot reviewer
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.

Quotes from Members

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

Pros

"We are able to see the real risk of a vulnerability on our environment with our security tools."
"Zafran has become an indispensable tool in our cybersecurity arsenal."
"Zafran is an excellent tool."
"The initial setup is pretty straightforward."
"Everything is in one dashboard; I'm notified when there's an incident and advised on what steps to take."
"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."
"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 solution was consistently available, and I cannot recall any instances where it was down."
"The quicker implementation of changes to our infrastructure from Alert Logic tell us if there are any problems."
"Notifications and the detail of notifications are most valuable. It is a user-friendly solution."
"It has the ability to install agents. It is pretty straightforward. You can automate the process pretty easily."
"I find the features that are most valuable are the policies that help us identify the vulnerabilities. These policies are then used for scanning instabilities and then identifying the particular vulnerabilities."
"I have experience with it on my attack stations, and it's pretty good to optimize. Personally, I think Nessus is quite a good product."
"The product's most valuable features are vulnerability and asset management. It can define the rules and validate the configuration."
"The most valuable feature is how it scanned and detected through its database to let us know exactly what fixes we needed to put in place for the vulnerabilities. It detects and it also gives you the way to fix it."
"The solution can scale well."
"I like its ease of use. It has the script that is pre-built in it, and you just got to know which ones you're looking for."
"The most valuable aspect of this solution is that you receive the entire report, which details the breakdown, especially in terms of critical, high, low, and mediums."
"The reports are pretty nice and easy to understand."
 

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."
"Its menu is not very intuitive. I would like to see the user menu expanded a bit. The user menu is very layered, and because of the layers, you have to go down a path that is not very intuitive."
"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.""
"The setup process was complex."
"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."
"As a user involved with the user interface, I believe there is a need to continue improving it based on feedback from our customers."
"The product needs to mature. We don't want to be bombarded with unnecessary issues and have the real ones slip through."
"The documentation, especially with the initial setup, needs improvement."
"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."
"There is room, overall, for improvement in the way it groups the workstations and the way it detects, when the vulnerability is scanned. Even when we would run a new scan, if it was an already existing vulnerability, it wouldn't put a new date on it."
"Lacks some penetration testing-related services."
"The accuracy of the vulnerability assessment is not up to par yet, as false alarms and false positives occur often."
"In terms of what could be improved, I would say its reporting portion."
"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."
"Scans aren't done properly and some devices aren't pinged."
"Model OS costs (and its segregation schema for individual modules)."
"Vulnerability recommendations are outdated and not in line with industry standards."
 

Pricing and Cost Advice

Information not available
"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."
"Almost any product that is on the AWS Marketplace is super easy to subscribe to."
"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."
"The price of Tenable Nessus could improve, it is expensive."
"It has a fair cost and very good cost-benefit ratio."
"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."
"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."
"Our organization is huge so our license costs $30,000."
"The product pricing is dynamic and varies based on the specific needs of each project and customer."
"The price is okay. I would give it a seven out of ten, where one is cheap and ten is expensive."
"I would like to see better discounts."
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Top Industries

By visitors reading reviews
Computer Software Company
14%
Financial Services Firm
12%
Manufacturing Company
7%
Retailer
6%
Computer Software Company
18%
Financial Services Firm
14%
Manufacturing Company
9%
Healthcare Company
9%
Educational Organization
37%
Computer Software Company
9%
Financial Services Firm
7%
Government
6%
 

Company Size

By reviewers
Large Enterprise
Midsize Enterprise
Small Business
No data available
 

Questions from the Community

What is your experience regarding pricing and costs for Zafran Security?
I find that the pricing for Zafran aligns well with the comprehensive features it offers. The asset and user-based li...
What needs improvement with Zafran Security?
Zafran is a new startup. Features are continuously being added or improved. 1) Continued integrations with existing (...
What is your primary use case for Zafran Security?
We connect this to our vulnerability scanner as input, our security tools to better determine risk, and our change ma...
What do you like most about Alert Logic?
The most valuable aspect of Alert Logic is its technology platform. They have SOCs in the US and Europe, giving them ...
What is your experience regarding pricing and costs for Alert Logic?
Alert Logic's license is one of the most competitive. They deliver a high-quality service for a competitive price.
What needs improvement with Alert Logic?
Alert Logic should also develop an EDR that is natively integrated into their solution. Currently, a client must buy ...
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...
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 ...
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...
 

Also Known As

No data available
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
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: April 2025.
849,686 professionals have used our research since 2012.