Microsoft Defender External Attack Surface Management vs. Trellix Email Security

Overview
ProductRatingMost Used ByProduct SummaryStarting Price
Microsoft Defender External Attack Surface Management
Score 9.9 out of 10
N/A
Microsoft Defender External Attack Surface Management is a service available on Microsoft's Azure, that provides insights into vulnerabilities, risks, and exposures for web-based resources. It defines an organization’s unique internet-exposed attack surface and discovers unknown resources to help users proactively manage security posture.
$0.01
per day per asset
Trellix Email Security
Score 9.9 out of 10
Enterprise companies (1,001+ employees)
Trellix Email Security (formerly FireEye Email Security) protects against advanced email attacks that bypass the initial gateway.
$0
per mailbox
Pricing
Microsoft Defender External Attack Surface ManagementTrellix Email Security
Editions & Modules
No answers on this topic
Server Edition
$0
per mailbox
AVAS
$0
per mailbox
Cloud Edition
$0
per mailbox
Offerings
Pricing Offerings
Microsoft Defender External Attack Surface ManagementTrellix Email Security
Free Trial
NoYes
Free/Freemium Version
NoNo
Premium Consulting/Integration Services
NoYes
Entry-level Setup FeeNo setup feeOptional
Additional Details
More Pricing Information
Features
Microsoft Defender External Attack Surface ManagementTrellix Email Security
Threat Intelligence
Comparison of Threat Intelligence features of Product A and Product B
Microsoft Defender External Attack Surface Management
9.7
1 Ratings
19% above category average
Trellix Email Security
-
Ratings
Network Analytics9.01 Ratings00 Ratings
Threat Recognition10.01 Ratings00 Ratings
Vulnerability Classification10.01 Ratings00 Ratings
Automated Alerts and Reporting10.01 Ratings00 Ratings
Threat Analysis10.01 Ratings00 Ratings
Threat Intelligence Reporting9.01 Ratings00 Ratings
Automated Threat Identification10.01 Ratings00 Ratings
Vulnerability Management Tools
Comparison of Vulnerability Management Tools features of Product A and Product B
Microsoft Defender External Attack Surface Management
9.4
1 Ratings
13% above category average
Trellix Email Security
-
Ratings
IT Asset Realization8.01 Ratings00 Ratings
Authentication9.01 Ratings00 Ratings
Configuration Monitoring10.01 Ratings00 Ratings
Web Scanning10.01 Ratings00 Ratings
Vulnerability Intelligence10.01 Ratings00 Ratings
Secure Email Gateway
Comparison of Secure Email Gateway features of Product A and Product B
Microsoft Defender External Attack Surface Management
-
Ratings
Trellix Email Security
8.2
6 Ratings
3% below category average
Anti-malware00 Ratings8.56 Ratings
Customizability00 Ratings8.06 Ratings
Threat Detection00 Ratings8.56 Ratings
Sandboxing00 Ratings8.06 Ratings
Management Tools00 Ratings8.06 Ratings
Best Alternatives
Microsoft Defender External Attack Surface ManagementTrellix Email Security
Small Businesses
Action1
Action1
Score 9.5 out of 10
Zoho Mail
Zoho Mail
Score 9.2 out of 10
Medium-sized Companies
Action1
Action1
Score 9.5 out of 10
Avanan
Avanan
Score 9.8 out of 10
Enterprises
CrowdStrike Falcon
CrowdStrike Falcon
Score 9.1 out of 10
Avanan
Avanan
Score 9.8 out of 10
All AlternativesView all alternativesView all alternatives
User Ratings
Microsoft Defender External Attack Surface ManagementTrellix Email Security
Likelihood to Recommend
-
(0 ratings)
9.0
(6 ratings)
Usability
-
(0 ratings)
8.2
(1 ratings)
Support Rating
-
(0 ratings)
7.3
(3 ratings)
User Testimonials
Microsoft Defender External Attack Surface ManagementTrellix Email Security
Likelihood to Recommend
Microsoft
Microsoft Defender External Attack Surface Management is particularly well-suited for discovering, inventorying, and continuously monitoring the external attack surface, especially in environments with heavy Microsoft adoption. It is less suitable as a standalone solution for internal scanning, real-time attack detection, automated remediation, or advanced application testing. Microsoft Defender External Attack Surface Management es especialmente adecuado para descubrir, inventariar y monitorear continuamente la superficie de ataque externa, sobre todo en entornos con fuerte adopción de Microsoft. Es menos adecuado como solución única para escaneo interno, detección de ataques en tiempo real, remediación automática o pruebas avanzadas de aplicaciones. Parts of this review were originally written in Spanish and have been translated into English using a third-party translation tool. While we strive for accuracy, some nuances or meanings may not be perfectly captured.
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Trellix (Musarubra US LLC)
It has a very good feature of URL replace, it helps us to block or prevent spam, phishing, or malicious emails. It has some limitations like if some large or lengthy emails come it takes more time to scan and to avoid delay it forwards the mail to the recipient with a warning note on it.
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Pros
Microsoft
  • Lack of visibility of external assets
  • Reduction of the risk of external attacks
  • Falta de visibilidad de activos externos
  • Reducción del riesgo de ataques externos
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Trellix (Musarubra US LLC)
  • Very user-friendly and simple interface.
  • Policy rules are easy to create and they work.
  • Very little downtime or operational impact.
  • Email delivery issues are easy to investigate and troubleshoot.
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Cons
Microsoft
  • Asset Attribution and Ownership Clarity
  • Risk Prioritization and Business Context
  • Noise and False Positives
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Trellix (Musarubra US LLC)
  • Sometimes feels that console running slow.
  • Riskware detection has a lot of false positive.
  • The user interface is not very intuitive.
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Usability
Microsoft
We rate Microsoft Defender External Attack Surface Management’s overall usability as 10 out of 10 because it delivers a strong balance between depth of capability and ease of use, particularly within organizations already operating in the Microsoft security ecosystem.
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Trellix (Musarubra US LLC)
FireEye Email Security is the most effective email security solution for protecting enterprises from APT. It is not complicated to set up and you can ride a wave of continuous security effects for a long time without major changes after the initial setup. It's automated, so users don't have to care too much about it. In addition, it provides detailed analysis data, so you can utilize it for 3rd party solutions if you want.
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Support Rating
Microsoft
No answers on this topic
Trellix (Musarubra US LLC)
The reason that I gave the support a 5 is that I have had both positive and negative experiences. One of the positive experiences was when a senior support engineer spend quite a few hours with me solving an issue that we were having. One of the negative ones was when we were experiencing an issue and one person from support gave one solution, and when the issue reoccurred we were told by another person that what was recommended to us the first time was incorrect. The issue was never fully solved.
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Alternatives Considered
Microsoft
Because Microsoft Defender External Attack Surface Management is part of the broader Microsoft Defender family (including Defender XDR, Entra ID, Azure Security, Sentinel, etc.), it:
Shares identity, endpoint, and threat context across tools
Reduces the need for custom integrations or connectors
Works in a “single pane of glass” experience for SOC analysts
Why it matters:
Organizations already invested in Microsoft security tools gain greater contextual insight and lower operational overhead.
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Trellix (Musarubra US LLC)
It was called Barracuda Spam Filter when we evaluated and switched to FireEye ES (called FireEye ETP at the time). At the time we compared them ES was much better at security and also spam filtering. ES has continued to get even better since we first chose them. The user interface, support, sales/engineer provided service, the effectiveness of the product, and continued improvement/development have made them a great choice.
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Return on Investment
Microsoft
  • Reduced Business Risk from Unknown External Assets
  • Operational Efficiency and Cost Avoidance
  • Faster Risk Identification During Change Events
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Trellix (Musarubra US LLC)
  • It can reduce the spam, malicious and phishing mails.
  • It has advanced threat intelligence.
  • It gives some false positives as well.
  • It has great decision making intelligence.
Read full review
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