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HackerOne vs Microsoft Defender External Attack Surface Management comparison

 

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)
7th
Average Rating
8.4
Reviews Sentiment
6.9
Number of Reviews
11
Ranking in other categories
Application Security Tools (18th), Vulnerability Management (32nd), Bug Bounty Platforms (2nd), Penetration Testing Services (2nd), AI Observability (16th)
Microsoft Defender External...
Ranking in Attack Surface Management (ASM)
10th
Average Rating
7.6
Reviews Sentiment
6.0
Number of Reviews
2
Ranking in other categories
Microsoft Security Suite (33rd)
 

Mindshare comparison

As of June 2026, in the Attack Surface Management (ASM) category, the mindshare of HackerOne is 3.9%, down from 6.0% compared to the previous year. The mindshare of Microsoft Defender External Attack Surface Management is 3.2%, up from 3.1% 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 Management3.2%
Other92.9%
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

"If you have a very critical vulnerability, some good companies will acknowledge it and pay you accordingly based on severity."
"The most valuable feature of HackerOne is its variety of programs. These programs provide depth into various areas, such as mobile, API, and websites."
"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."
"I notice a return on investment through the group of researchers at HackerOne identifying vulnerabilities, saving us money, time, and manpower, with the efficiency of HackerOne allowing them to accomplish in three to four hours what would take two red teamers a whole day."
"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."
"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."
"HackerOne is larger than WebCloud and has a better reputation than BugCloud, which results in a smoother process."
"HackerOne has been the right fit for our current situation from both a functionality and cost-effectiveness perspective."
"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

"Triage response time is a significant issue. The response time and triage speed are not fast enough, and this is causing many people to leave HackerOne."
"One issue I've experienced is traffic. Many people try to participate when an opportunity with a bounty of around 1,000-15,000 dollars comes up. In this case, the first person to report the vulnerability gets the bounty. If a second person reports the same vulnerability, they are marked as duplicated instead of receiving some recognition. The second person also invested time finding the issue, so I think this can be improved."
"Everything has become slower on HackerOne."
"Response time can be improved. The HackerOne Trust team can be slow to respond sometimes. They're not using AI, which could help reduce the number of duplicate reports."
"However, some things can be improved, such as better report deduplication by automatically identifying duplicate vulnerability reports more accurately."
"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."
"Everything has become slower on HackerOne. I have noticed that older researchers receive all the private invites while newer ones receive fewer."
"However, I reduced my rating by one mark because a proper internal triage team should be in place, not as a replacement for internal security controls."
"The integration is not as seamless compared to competitors like Palo Alto."
"Further integration across different Microsoft products would be an improvement."
"With Microsoft, support is always crazy, it's not easy to get support."
 

Pricing and Cost Advice

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

By visitors reading reviews
Manufacturing Company
13%
Comms Service Provider
12%
Financial Services Firm
10%
Computer Software Company
9%
Computer Software Company
15%
Financial Services Firm
10%
Outsourcing Company
9%
Government
5%
 

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 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 duplic...
What is your primary use case for HackerOne?
Our main use case for HackerOne is to create a bridge between the organization and a global community of ethical hackers where we ask them to find bugs in our environment, and based on that, they p...
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: April 2026.
900,644 professionals have used our research since 2012.