Tessian vs Abnormal Security

Abnormal Security and Tessian are both ai email security solutions. Abnormal Security aI-powered email security platform specializing in behavioral detection of social engineering attacks, while Tessian human layer security platform preventing inbound threats and outbound misdirected emails. The best choice depends on your organization's size, technical requirements, and budget.

Updated Feb 2026
How we compare:This comparison is based on official documentation, public pricing, community discussions, and aggregated user feedback, not hands-on testing by our team. We organize what real users and practitioners are saying across the web.

The Bottom Line

Choose Abnormal Security if superior detection of socially-engineered attacks with no malicious payload is your priority and organizations facing sophisticated social engineering and BEC attacks that bypass traditional email gateways. Choose Tessian if unique misdirected email prevention addresses a gap no other tool covers well matters most and organizations concerned about both inbound email threats and accidental data loss from misdirected emails and human error.

Choose Tessian if:

  • You value superior detection of socially-engineered attacks with no malicious payload
  • You value aPI-based deployment requires no MX record changes — deploys in minutes
  • You value behavioral AI catches novel attacks that signature-based tools miss
  • You want to avoid now part of Proofpoint — future as standalone product uncertain
  • You want to avoid not a full email gateway replacement

Choose Abnormal Security if:

  • You value unique misdirected email prevention addresses a gap no other tool covers well
  • You value behavioral AI catches threats that gateway solutions miss
  • You value real-time coaching helps users make better security decisions
  • You want to avoid does not replace a full email gateway — typically layers on top of one
  • You want to avoid less effective against traditional malware and payload-based attacks

Feature Comparison

FeatureTessianAbnormal Security
PricingCustom pricing / per-user licensingCustom pricing / per-user licensing
Pricing ModelPer-user subscriptionPer-user subscription
Open SourceNoNo
DeploymentCloudCloud
Best ForOrganizations facing sophisticated social engineering and BEC attacks that bypass traditional email gatewaysOrganizations concerned about both inbound email threats and accidental data loss from misdirected emails and human error
Business email compromise preventionSupportedNot available
Vendor and supply chain fraud detectionSupportedNot available
Automated remediation and quarantineSupportedNot available

Sources

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Tessian AlternativesAbnormal Security AlternativesTessian OverviewAbnormal Security Overview