Founded in 2018, Abnormal Security aims to protect enterprises from targeted email attacks through its innovative Abnormal Behavior Technology (ABX). The company's core mission is to safeguard organizations against account takeovers, financial damage, and other cyber threats by modeling the identity of employees and external senders, profiling relationships, and analyzing email content. Abnormal Security focuses on providing advanced email security solutions for large enterprises across various industries.

Notable affiliated people include co-founders Evan Reiser and Sanjay Jeyakumar. The company has attracted significant investment from prominent venture capital firms such as Greylock Partners and Index Ventures. Key achievements include rapid growth in customer acquisition and recognition as a leader in the email security space. Abnormal Security's impact is evident in its ability to prevent sophisticated cyberattacks, thereby enhancing the overall cybersecurity posture of its clients.