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Abnormal Security
AI email security platform that stops socially engineered attacks like business email compromise and advanced phishing.
What is Abnormal Security?
AI Email Security Against Socially Engineered Attacks
Abnormal Security is an AI-powered cloud email security platform specifically designed to stop the most sophisticated email attacks — business email compromise (BEC), vendor fraud, supply chain attacks, and advanced phishing — that evade traditional secure email gateways. Its behavioral AI understands the context and relationships behind email communications to detect subtle manipulation attempts.
Stopping BEC and Vendor Fraud
Business email compromise is the costliest form of cybercrime, with losses in the billions annually. Abnormal's AI analyzes the full context of incoming emails — sender identity, communication history, request patterns, and behavioral signals — to detect impersonation and social engineering attempts even when attackers use legitimate email infrastructure. This contextual understanding catches attacks that have no malware, no malicious links, and no signatures for traditional tools to detect.
- BEC and vendor fraud detection via contextual AI
- Account takeover detection for compromised email accounts
- Integrates with Microsoft 365 and Google Workspace via API
- No MX record change — deploys in minutes
Key Features
AI detects business email compromise and impersonation without signatures.
Identifies vendor impersonation and supply chain email attacks.
Detects compromised email accounts through behavioral anomaly analysis.
API-based integration with M365 and Google Workspace — no MX record changes.
Detailed reports on detected attacks and financial risk quantification.
Who Uses Abnormal Security?
Stop wire fraud and invoice fraud attacks targeting finance teams.
Detect vendor impersonation and compromised supplier email accounts.
Identify and contain compromised email accounts within the organization.
Demonstrate advanced email threat protection for audit and compliance purposes.
Pros & Cons
✅ Pros
- Best-in-class BEC detection that most email gateways cannot match
- API deployment means no MX record changes and minimal disruption
- Financial risk quantification helps justify security investment
- Continuously learns organizational communication patterns for accuracy
❌ Cons
- Enterprise pricing — significant investment required
- Primarily focused on email — not a comprehensive security platform
- Works best as a complement to existing email gateway, not a replacement
- Some legitimate bulk email may trigger false positives during tuning
Abnormal Security Pricing
Core
- BEC detection
- Phishing prevention
- M365/Google integration
- Standard support
Advanced
- Vendor fraud
- Account takeover
- Risk quantification
- Advanced analytics
- Dedicated support
Abnormal Security earns a 3.6/5 rating from our editorial team. While it requires a paid subscription, the professional-grade capabilities deliver strong ROI for serious users. Standout strengths include best-in-class bec detection that most email gateways cannot match and api deployment means no mx record changes and minimal disruption.
Get Started with Abnormal Security →