Abnormal AI, formerly known as Abnormal Security, is a privately held company based in San Francisco, California, founded in 2018. It operates as an AI-native human behavior security platform, leveraging machine learning to stop sophisticated inbound attacks and detect compromised accounts across email and connected applications. The company has raised significant funding, including a $250 million Series D round in August 2024, valuing it at $5.1 billion. Abnormal AI has over 1,000 employees and serves more than 3,200 organizations worldwide, including over 20% of the Fortune 500.
Abnormal AI Corporate Details & Core Services
Abnormal AI provides an AI-native human behavior security platform that leverages machine learning to stop sophisticated inbound attacks and detect compromised accounts across email and connected applications.
Protects organizations from advanced email threats, including phishing, ransomware, fraud, social engineering, supply chain attacks, executive impersonation, spam, and graymail. Integrates with Microsoft 365 and Google Workspace via a one-click API without disrupting mail flow.
Account Takeover Protection
Detects and remediates compromised accounts by analyzing user behavior across email and connected applications. Integrates with identity providers like Azure Active Directory, Okta, and Ping to monitor sign-in events and other signals.
AI Security Mailbox
An AI-powered assistant that engages with employees in real-time to analyze and respond to user-reported emails, promoting security awareness and automating the triage and remediation of potential threats.
Security Posture Management
Provides visibility into security configurations across cloud email and other applications, enabling organizations to discover and fix key security configuration risks.
What are the latest developments at Abnormal AI?
Date
Type
Description
April, 2025
news
Abnormal Security rebrands to Abnormal AI, reflecting its evolution into a broader AI-native security platform.
December, 2025
news
Abnormal AI named a Leader in the 2025 Gartner Magic Quadrant for Email Security for the second consecutive year.
June, 2025
news
Abnormal AI named to CNBC Disruptor 50 list for the second consecutive year, showcasing continued innovation in AI-powered cybersecurity.
August, 2024
news
Abnormal Security closes $250 million in Series D funding at a $5.1 billion valuation.
April, 2023
news
Abnormal Security expands behavioral AI platform to protect against multi-channel attacks across Slack, Microsoft Teams, and Zoom.
What industry awards and recognitions has Abnormal AI received?
Date
Type
Description
December, 2025
award
Named a Leader in the 2025 Gartner Magic Quadrant for Email Security for the second consecutive year.
November, 2023
award
Recognized as a Fortune AI 50 Innovator, highlighting its AI-native cybersecurity capabilities.
August, 2023
award
Included in the Forbes Cloud 100 list, recognizing top private cloud companies.
September, 2023
award
Named to the Intelligent Applications Top 40 for the second consecutive year.
June, 2022
award
Won the 2022 Microsoft Rising Azure Technology Partner of the Year Award.
Abnormal AI VS Proofpoint VS Mimecast VS IRONSCALES VS Avanan VS Armorblox : 2026 Comparison
