Abnormal Security is a cloud-based email security platform designed to protect organizations from advanced targeted attacks, such as phishing and business email compromise (BEC), and account takeovers. Their approach is centered on using artificial intelligence (AI) and behavioral data science to detect anomalies in email activity.


| Product | Market Share (%) |
|---|---|
| Abnormal Security | 6.0% |
| Microsoft Defender for Office 365 | 10.4% |
| Proofpoint Email Protection | 7.7% |
| Other | 75.9% |
| Type | Title | Date | |
|---|---|---|---|
| Category | Email Security | Dec 29, 2025 | Download |
| Product | Reviews, tips, and advice from real users | Dec 29, 2025 | Download |
| Comparison | Abnormal Security vs Microsoft Defender for Office 365 | Dec 29, 2025 | Download |
| Comparison | Abnormal Security vs Check Point Harmony Email & Collaboration | Dec 29, 2025 | Download |
| Comparison | Abnormal Security vs Proofpoint Email Protection | Dec 29, 2025 | Download |
| Title | Rating | Mindshare | Recommending | |
|---|---|---|---|---|
| Microsoft Defender for Office 365 | 4.2 | 10.4% | 96% | 60 interviewsAdd to research |
| Darktrace | 4.1 | 2.4% | 94% | 82 interviewsAdd to research |
Abnormal Security users have reported improved security, reduced threats, and overall effectiveness in protecting their organization.
| Company Size | Count |
|---|---|
| Small Business | 1 |
| Midsize Enterprise | 2 |
| Large Enterprise | 8 |
| Company Size | Count |
|---|---|
| Small Business | 375 |
| Midsize Enterprise | 282 |
| Large Enterprise | 789 |
Abnormal Security is specializes in protecting email communications, detecting and preventing threats, filtering out spam and phishing emails, and blocking malicious attachments. Users rely on Abnormal Security to enhance their email security, identify and stop sophisticated attacks, safeguard sensitive information, and improve overall cybersecurity measures.
Abnormal Security targets sophisticated attacks that traditional email security measures might miss. Their system analyzes various data points to build an understanding of email behavior within your organization. This includes emails themselves, sender and recipient information, and even business context. By understanding these patterns, they can identify anomalies that might indicate a malicious attempt. Their solution is designed for the cloud, offering quick deployment and minimal configuration. This eliminates the need for complex setup processes often associated with security software.
Abnormal Security customers appreciate the ease of use in setting up and managing the platform, along with its ability to accurately filter out suspicious emails and prevent potential cyber threats. Abnormal Security has been praised for streamlining processes, boosting productivity, improving communication within teams, providing valuable analytics for informed decision-making, and driving success in various projects. Experience the robust security measures and benefits of Abnormal Security to safeguard your sensitive information and maintain a secure email environment.
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| Author info | Rating | Review Summary |
|---|---|---|
| Senior Director of IT at Crunch Fitness West Florida and Atlanta (CR Fitness) | 5.0 | We transitioned from Mailroute to Abnormal Security for enhanced email protection alongside Microsoft 365. Despite some integration challenges, Abnormal Security's ability to detect threats, including compromised accounts, convinced us of its superior capabilities over other considered solutions. |
| Senior Director, Information Technology at a insurance company with 51-200 employees | 3.5 | I've used Abnormal Security for two years in the finance industry and value its AI-driven email categorization and insights, though there's room for improvement. Integration was easy, support is solid, and overall, I'd rate it an eight. |
| IT Manager at a media company with 501-1,000 employees | 4.5 | We transitioned from Mimecast to Abnormal Security for enhanced email security. Abnormal Security's auto-remediation and Detection 360 features effectively identify missed threats and improve AI training. However, I wish they could include outbound scanning to prevent malicious emails from being sent. |
| Cyber Security Engineer at a hospitality company with 10,001+ employees | 5.0 | Abnormal Security is crucial for us, providing valuable threat protection, auto-remediation, and an effective abuse mailbox feature. It augments our Proofpoint gateway, offering a great return on investment by saving costs and preventing threats that might be missed otherwise. |
| Manager, Information Technology Technical Services at a wholesaler/distributor with 5,001-10,000 employees | 5.0 | I use Abnormal Security in a medium-sized manufacturing environment to block spam and email threats. Its automated scoring tool enhances threat detection and scales easily. It offers great ROI by preventing business email compromise, though more granular options would be beneficial. |
| Vice President of Information Security at Comfort Systems USA Inc | 5.0 | We implemented Abnormal Security to combat advanced email threats, finding it intuitive and efficient. Although it lacks on-premise support, it surpasses our previous solutions by effectively detecting sophisticated attacks with minimal configuration and excellent support. |
| Senior Cybersecurity Engineer (Security Operations & Engineering) at a manufacturing company with 10,001+ employees | 4.5 | I use Abnormal Security to enhance email and identity security, benefiting from its ability to alert me of breaches among partners. While integration with other cybersecurity tools could improve, it surpasses competitors like Proofpoint, making it a preferred choice. |
| Sr. Director Information Security at a energy/utilities company with 5,001-10,000 employees | 4.5 | I use Abnormal Security for phishing protection, appreciating its auto-remediation and quick deployment. It outperformed previous solutions and integrates AI for evolving threats. Improvement is needed in partnerships. The lack of customization is a drawback. |