Abnormal Security
AI-powered email security platform specializing in behavioral detection of social engineering attacks
AI Email SecurityCustom pricing / per-user licensing
How we work:This listing is aggregated from Abnormal Security's official documentation, public pricing pages, community discussions (Reddit, HN, forums), and real user feedback. We do not do hands-on testing. We aggregate and organize what's already out there. Last verified February 2026.
What is Abnormal Security?
Abnormal Security is an AI-native email security platform that uses behavioral AI to detect and block socially-engineered email attacks that bypass traditional email security gateways. Rather than relying on signatures, threat feeds, or URL scanning, Abnormal builds behavioral profiles of every identity in the organization and detects anomalies in communication patterns, writing style, and email metadata. This approach is particularly effective against business email compromise, vendor fraud, and account takeover attacks that contain no malicious payloads for traditional tools to catch.
Best for: Organizations facing sophisticated social engineering and BEC attacks that bypass traditional email gateways
Pros
- ✓ Superior detection of socially-engineered attacks with no malicious payload
- ✓ API-based deployment requires no MX record changes — deploys in minutes
- ✓ Behavioral AI catches novel attacks that signature-based tools miss
- ✓ Extremely low false positive rate due to identity-based detection
- ✓ Strong vendor and supply chain fraud detection capabilities
Cons
- ✗ Does not replace a full email gateway — typically layers on top of one
- ✗ Less effective against traditional malware and payload-based attacks
- ✗ Premium pricing for what is an additional security layer
- ✗ Behavioral models need time to learn organization communication patterns
- ✗ No email archiving, DLP, or compliance capabilities
Key Features
→Behavioral AI threat detection
→Business email compromise prevention
→Vendor and supply chain fraud detection
→Account takeover protection
→API-based deployment (no MX record changes)
→Automated remediation and quarantine
→VIP and executive protection
→Email-like messaging platform protection
Abnormal Security Comparisons
Abnormal Security vs Cisco Secure Email→Abnormal Security vs Mimecast→Abnormal Security vs Trend Micro Email Security→Abnormal Security vs Barracuda Email Security→Abnormal Security vs IRONSCALES→Abnormal Security vs Microsoft Defender for Office 365→Abnormal Security vs Tessian→Abnormal Security vs Proofpoint→
Quick Info
| Pricing | Custom pricing / per-user licensing |
| Model | Per-user subscription |
| Founded | 2018 |
| Cloud | Yes |
| Self-Hosted | No |
Last updated: Feb 20, 2026
Abnormal Security Alternatives
View All AlternativesProofpoint
Enterprise email security platform for advanced threat prote...Mimecast
Cloud email security platform with threat protection, archiv...Microsoft Defender for Office 365
Microsoft's native email security for Microsoft 365 with XDR...Barracuda Email Security
Email threat protection platform available as gateway applia...Cisco Secure Email
Enterprise email security gateway with Cisco Talos threat in...
Enterprise email security platform for advanced threat prote...Mimecast
Cloud email security platform with threat protection, archiv...Microsoft Defender for Office 365
Microsoft's native email security for Microsoft 365 with XDR...Barracuda Email Security
Email threat protection platform available as gateway applia...Cisco Secure Email
Enterprise email security gateway with Cisco Talos threat in...