Acunetix vs Defensics Protocol Fuzzing comparison

The compared Invicti and Black Duck solutions aren't in the same category. Invicti is ranked #14 in AS , with an average rating of 7.9, and holds a 2.1% mindshare in the category. Black Duck is ranked #4 in FTT , and holds a 17.6% mindshare. Additionally, 88% of Invicti users are willing to recommend the solution, compared to 100% of Black Duck users who would recommend it.

Acunetix

Read 36 Acunetix reviews

6,676 Views
3,138 Comparison Views

88% willing to recommend

Defensics Protocol Fuzzing

Read 4 Defensics Protocol Fuzzing reviews

1,274 Views
140 Comparison Views

100% willing to recommend

Acunetix

Defensics Protocol Fuzzing

Comparison Buyer's Guide

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Executive Summary

We performed a comparison between Acunetix and Defensics Protocol Fuzzing based on real PeerSpot user reviews.

Find out what your peers are saying about SonarSource Sàrl, Checkmarx, Veracode and others in Application Security Tools.

To learn more, read our detailed Application Security Tools Report (Updated: February 2026).

Buyer's Guide

Application Security Tools

February 2026

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Helped 885,286 peers since 2012

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

Acunetix

Average Rating

7.8

Reviews Sentiment

6.6

Number of Reviews

Ranking in other categories

Application Security Tools (14th), Static Application Security Testing (SAST) (10th), Vulnerability Management (28th), DevSecOps (6th)

Defensics Protocol Fuzzing

Average Rating

8.6

Number of Reviews

Ranking in other categories

Fuzz Testing Tools (4th)

Mindshare comparison

While both are Quality Assurance solutions, they serve different purposes. Acunetix is designed for Application Security Tools and holds a mindshare of 2.1%, down 2.5% compared to last year.
Defensics Protocol Fuzzing, on the other hand, focuses on Fuzz Testing Tools, holds 17.6% mindshare, down 20.0% since last year.

Application Security Tools Mindshare Distribution
Product	Mindshare (%)
Acunetix	2.1%
SonarQube	16.3%
Checkmarx One	9.9%
Other	71.69999999999999%

Application Security Tools

Fuzz Testing Tools Mindshare Distribution
Product	Mindshare (%)
Defensics Protocol Fuzzing	17.6%
PortSwigger Burp Suite Professional	33.2%
GitLab	26.6%
Other	22.599999999999994%

Fuzz Testing Tools

Featured Reviews

Rahul Kumar

Senior Engineer - Penetration Tester at a government with 10,001+ employees

Identifies vulnerabilities across bulk web applications but needs better support and cleaner reports

The best feature Acunetix offers is the centralized dashboard and the quality of reports it generates, which includes various options for selecting reports and developer options for directly sharing the reports with developers. The centralized dashboard of Acunetix gives visibility into the security aspects of mass applications; for instance, with more than 200 applications, it provides a valuable overview of findings and necessary fixes, along with a high-level summary that helps us achieve compliance through monthly and sometimes weekly scanning. In terms of reporting, Acunetix is excellent because it can generate different types of reports, such as an executive summary report, detailed reports, and developer reports that can be shared directly with developers. Acunetix positively impacts my organization by helping identify outdated libraries and applications, including legacy applications vulnerable to old attacks based on OWASP Top 10, thus aiding in compliance checks for PCI DSS and OWASP. Acunetix provides a centralized report with compliance-related aspects and a vulnerability timeline, effectively helping reduce vulnerabilities and save time.

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Sarath Kumar Choday

Senior Technical Lead at HCL Technologies

Product security tests for switches and router sections

Codenomicon Defensics should be more advanced for the testing sector. It should be somewhat easy and flexible to install. What I see in the documentation isn't that. Even if something doesn't malfunction, sometimes it is hard to install and execute. The product needs video documentation. This would help a lot more.

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Quotes from Members

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

Pros

"There is a lot of documentation on their website which makes setting it up and using it quite simple."

"As a team, it's helped us to deliver better security assessments."

"Segregation of reports is really, really good with Acunetix; it provides us with a lot of in-depth details."

"It comes equipped with an internal applicator, which automatically identifies and addresses vulnerabilities within the program."

"The vulnerability scanning option for analyzing the security loopholes on the websites is the most valuable feature of this solution."

"The scalability is more than good; it can operate both as a standalone and it can be integrated with other applications, which makes it a very versatile solution to have, and this solution is simple enough, especially with the cloud."

"Login Sequence Recorder, scan throttling, and fantastic reporting output are the most valuable features."

"The scalability is more than good because it can operate both as a standalone and it can be integrated as part of applications, so that really makes it a very, very versatile solution to have."

More Acunetix pros

"The product is related to US usage with TLS contact fees, i.e. how more data center connections will help lower networking costs."

"Simple and straightforward GUI."

"Whatever the test suit they give, it is intelligent; it will understand the protocol and it will generate the test cases based on the protocol: protocol, message sequence, protocol, message structure, and because of that, we can eliminate a lot of unwanted test cases so we can execute the tests and complete them very quickly."

"Whatever the test suit they give, it is intelligent. It will understand the protocol and it will generate the test cases based on the protocol: protocol, message sequence, protocol, message structure... Because of that, we can eliminate a lot of unwanted test cases, so we can execute the tests and complete them very quickly."

"ROI was 100%. Since there are no product suites available that provide the level of testing available with Codenomicon, the development, quality and security assurance departments know that the investment was correct."

"We have found multiple issues in our embedded system network protocols, related to buffer overflow. We have reduced some of these issues."

"The stability of this product is great; we tested it under multiple constraints and even on cloud services it is absolutely stable."

Cons

"Tool is quite expensive though compared to other tools."

"In terms of what needs improvement, the way the licensing model is currently is not very convenient for us because initially, when we bought it, the licensing model was very flexible, but now it restricts us."

"However, it doesn't seem very helpful or useful for scanning web services, and that has what I feel that the organization could work better on that."

"The costs for the licensing have changed and it's not in our favor which is why we're now looking at other options."

"I had some issues with the JSON parameters where it found some strange vulnerabilities, but it didn't alert the person using it or me about these vulnerabilities, e.g., an error for SQL injection."

"The solution can be improved by adding the ability to scan subdomains automatically, and by providing reports that can be exported to external databases to share with other solutions."

"I believe Acunetix can improve customer support, as the dedicated support staff are often unfamiliar with problems and troubleshooting, leading to communication gaps that delay issue resolution."

"There is room for improvement in website authentication because I've seen other products that can do it much better."

More Acunetix cons

"Codenomicon Defensics should be more advanced for the testing sector. It should be somewhat easy and flexible to install."

"It does not support the complete protocol stack. There are some IoT protocols that are not supported and new protocols that are not supported."

"It requires understanding the Defensics protocol."

"You can't implement proprietary ciphering algorithms, nor can you modify protocol models if you need to test customized public protocols."

"Sometimes, when we are testing embedded devices, when we trigger the test cases, the target will crash immediately. It is very difficult for us to identify the root cause of the crash because they do not provide sophisticated tools on the target side. They cover only the client-side application... They do not have diagnostic tools for the target side. Rather, they have them but they are very minimal and not very helpful."

"Codenomicon Defensics should be more advanced for the testing sector. It should be somewhat easy and flexible to install."

Pricing and Cost Advice

"The solution is expensive."

"The cost is based on two types of licenses, ConsultLite, and ConsultPlus, as well as the number of domains that are scanned."

"Acunetix was around the same price as all the other vendors we looked at, nothing special."

"Implementing Acunetix needs a medium or larger business agency, because you need some money to get Acunetix. It is costly, but if you care about your agency's security, then maybe it's a cost that might help you in the future."

"The price is exceptionally high."

"I would say that Acunetix is expensive because there are products on the market with similar features that are equally or better-priced."

"The pricing is a little high, and moreover, it's kind of domain-based."

"All things considered, I think it has a good price/value ratio."

More Acunetix pricing and cost advice

"Licensing is a bit expensive."

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Top Industries

By visitors reading reviews

Financial Services Firm

12%

Computer Software Company

11%

Manufacturing Company

10%

Government

Computer Software Company

16%

Manufacturing Company

15%

Financial Services Firm

Retailer

Company Size

By reviewers

Large Enterprise

Midsize Enterprise

Small Business

By reviewers
Company Size	Count
Small Business	15
Midsize Enterprise	7
Large Enterprise	18

No data available

Questions from the Community

What is your primary use case for Acunetix Vulnerability Scanner?

I'm using Acunetix to automate security checks. Acunetix helped me catch common vulnerability issues early and improved the overall security posture of the application before development, specifica...

See all answers

What advice do you have for others considering Acunetix Vulnerability Scanner?

I would advise anyone or any startup looking to engage in the security part to directly use Acunetix, as this will help in most aspects. I would rate this product a nine out of ten.

See all answers

What is your experience regarding pricing and costs for Acunetix?

The experience with pricing, setup cost, and licensing has been that the setup cost and pricing need to be reconsidered.

See all answers

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Comparisons

OWASP Zap vs Acunetix

Compared 11% of the time

PortSwigger Burp Suite Professional vs Acunetix

Compared 8% of the time

Invicti vs Acunetix

Compared 6% of the time

Veracode vs Acunetix

Compared 5% of the time

HCL AppScan vs Acunetix

Compared 4% of the time

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SonarQube vs Defensics Protocol Fuzzing

Compared 8% of the time

Blue Cedar vs Defensics Protocol Fuzzing

Compared 7% of the time

Coverity Static vs Defensics Protocol Fuzzing

Compared 6% of the time

Checkmarx One vs Defensics Protocol Fuzzing

Compared 6% of the time

HCL AppScan vs Defensics Protocol Fuzzing

Compared 6% of the time

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Product Reports

Buyer's Guide

Acunetix

March 2026

Download Acunetix product report

Buyer's Guide

Defensics Protocol Fuzzing vs. PortSwigger Burp Suite Professional

March 2026

Download Defensics Protocol Fuzzing product report

Also Known As

AcuSensor

Codenomicon Defensics

Overview

Acunetix Web Vulnerability Scanner is an automated web application security testing tool that audits your web applications by checking for vulnerabilities like SQL Injection, Cross site scripting, and other exploitable vulnerabilities.

Invicti

Defensics® fuzz testing is a comprehensive, powerful, and automated black box solution that enables organizations to effectively and efficiently discover and remediate security weaknesses in software. By taking a systematic and intelligent approach to negative testing, Defensics allows organizations to ensure software security without compromising on product innovation, increasing time to market, or inflating operational costs.

Black Duck

Sample Customers

Joomla!, Digicure, Team Random, Credit Suisse, Samsung, Air New Zealand

Coriant, CERT-FI, Next Generation Networks

Buyer's Guide

Application Security Tools

February 2026

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