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HackerOne vs Microsoft Defender External Attack Surface Management comparison

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Comparison Buyer's Guide

Executive SummaryUpdated on Jun 3, 2026

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

HackerOne
Ranking in Attack Surface Management (ASM)
5th
Average Rating
8.4
Reviews Sentiment
6.9
Number of Reviews
11
Ranking in other categories
Application Security Tools (19th), Vulnerability Management (35th), Bug Bounty Platforms (2nd), Penetration Testing Services (2nd), AI Observability (17th)
Microsoft Defender External...
Ranking in Attack Surface Management (ASM)
13th
Average Rating
7.6
Reviews Sentiment
6.0
Number of Reviews
2
Ranking in other categories
Microsoft Security Suite (33rd)
 

Mindshare comparison

As of September 2026, in the Attack Surface Management (ASM) category, the mindshare of HackerOne is 3.9%, down from 8.9% compared to the previous year. The mindshare of Microsoft Defender External Attack Surface Management is 3.0%, down from 3.8% compared to the previous year. It is calculated based on PeerSpot user engagement data.
Attack Surface Management (ASM) Mindshare Distribution
ProductMindshare (%)
HackerOne3.9%
Microsoft Defender External Attack Surface Management3.0%
Other93.1%
Attack Surface Management (ASM)
 

Featured Reviews

NitishKumar - PeerSpot reviewer
Consultant at a manufacturing company with 10,001+ employees
Crowdsourced security has strengthened our bug discovery and improved vulnerability response
HackerOne is already doing well, although I believe implementing stricter SLAs for the time to first response and time to bounty would help prevent researchers' burnout, especially regarding duplicate submissions. I suggest systematic bug rewards because currently, if a researcher finds one bug in multiple places, they often only get paid for one. Improving the handling of systemic vulnerabilities would encourage deeper research. Additionally, improving multi-currency and crypto payout options would help make the platform more accessible globally.
AndyChan3 - PeerSpot reviewer
General manager at a tech services company with 201-500 employees
Enhanced visibility and exposes vulnerabilities but needs more integration
I am currently in the pilot stage of implementing Microsoft External Attack Surface Management (EASM). My organization is transitioning to a comprehensive track of Microsoft solutions, and we will move to full-scale production in another year, maybe Microsoft External Attack Surface Management…

Quotes from Members

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

Pros

"Using HackerOne has definitely improved the security of my web application, identifying security gaps I didn't realize as a web developer."
"HackerOne is a very good platform with the trust of different companies including Shopify, PayPal, and Uber, which creates a stronger brand perception and competitive market positioning."
"Apart from getting all the bug bounty opportunities, we also get the chance to practice in a safe environment, like a demo setup. These features are great for beginners who want to explore bug bounties in the future."
"The most valuable feature of HackerOne is its variety of programs. These programs provide depth into various areas, such as mobile, API, and websites."
"It helps me to get new sales, profits, and other benefits."
"HackerOne is larger than WebCloud and has a better reputation than BugCloud, which results in a smoother process."
"If you have a very critical vulnerability, some good companies will acknowledge it and pay you accordingly based on severity."
"The fast verification process impacts my motivation significantly because a quick response keeps me motivated, and if I'm going to try and hunt bugs today, I would appreciate a response within the day or at least within a few days."
"It seems to be better at protecting from cyberattacks."
"Microsoft External Attack Surface Management helps improve the visibility of my exposed vulnerabilities and provides an overview of my security posture across the globe."
 

Cons

"Sometimes new users don't receive invites just because they are new, despite potentially being very skilled hackers, so I feel new users should get more chances and opportunities."
"One limitation is that if a finding has been reported on HackerOne and was also reported earlier by another user or outsider, the platform is not able to collate that information together."
"Everything has become slower on HackerOne."
"However, some things can be improved, such as better report deduplication by automatically identifying duplicate vulnerability reports more accurately."
"Everything has become slower on HackerOne. I have noticed that older researchers receive all the private invites while newer ones receive fewer."
"Customer support can improve, as there are instances of ghosting that need to be addressed."
"The ability to view the conversation between the triagers and the programs will be really good."
"HackerOne provides a "HackBot" which helps identify other relevant reports, including duplicates, public reports from other companies, etc. However, the functionality is limited and it would be nice to integrate it with broader services offered like auto responses, triggers, etc."
"With Microsoft, support is always crazy, it's not easy to get support."
"Further integration across different Microsoft products would be an improvement."
"The integration is not as seamless compared to competitors like Palo Alto."
 

Pricing and Cost Advice

"The tool is open-source and free for bug bounty hunters."
"The solution is free."
Information not available
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Top Industries

By visitors reading reviews
Comms Service Provider
13%
Manufacturing Company
11%
Financial Services Firm
10%
Outsourcing Company
7%
Outsourcing Company
13%
Computer Software Company
10%
Financial Services Firm
9%
Comms Service Provider
6%
 

Company Size

By reviewers
Large Enterprise
Midsize Enterprise
Small Business
By reviewers
Company SizeCount
Small Business7
Midsize Enterprise1
Large Enterprise7
No data available
 

Questions from the Community

What is your experience regarding pricing and costs for HackerOne?
I'm not very sure about pricing, setup costs, and licensing, as those are managed by our management team.
What needs improvement with HackerOne?
HackerOne can be improved, and the insights can be a little better. I chose a nine for my rating because it has very great features such as a large research community, workflow integration, analyti...
What is your primary use case for HackerOne?
My main use case for HackerOne is bug bounties and getting paid through that platform. Companies like Fastify and Oracle create bug bounties and vulnerability disclosure programs on HackerOne. Ethi...
What needs improvement with Microsoft Defender External Attack Surface Management?
Further integration across different Microsoft products would be an improvement. Introduction of more AI automation into the products would also be beneficial. The integration is not as seamless co...
What is your primary use case for Microsoft Defender External Attack Surface Management?
I am currently in the pilot stage of implementing Microsoft External Attack Surface Management (EASM). My organization is transitioning to a comprehensive track of Microsoft solutions, and we will ...
 

Also Known As

HackerOne Assets, HackerOne Pentesting Services, HackerOne Security Assessments, HackerOne Vulnerability Management
No data available
 

Overview

 

Sample Customers

Anthropic, Crypto.com, General Motors, GitHub, Goldman Sachs, Uber, and the U.S. Department of Defense
Information Not Available
Find out what your peers are saying about HackerOne vs. Microsoft Defender External Attack Surface Management and other solutions. Updated: August 2026.
913,806 professionals have used our research since 2012.