# Evan Reiser

> Co-founder and CEO of Abnormal AI.

Reiser applies AI and machine learning to detect socially engineered attacks across email and the modern workplace. He previously led product and ML teams at Twitter and co-founded Bloomspot and AdStack, and is a prominent voice on AI in security.

- **Category:** [Founders & CEOs](https://gracker.ai/cyber-resources/founders)
- **Website:** https://abnormal.ai
- **Location:** San Francisco, CA, USA
- **Company:** Abnormal AI
- **Title:** Co-founder & CEO
- **Verified:** Yes
- **Last updated:** June 9, 2026

## Expertise

- AI/ML security
- Email/behavioral security
- Product leadership
- Cybersecurity entrepreneurship
- Enterprise scaling

## Frequently asked questions

### Who is Evan Reiser?

Evan Reiser co-founded Abnormal Security (now Abnormal AI) in 2018 and serves as CEO, building it into a multibillion-dollar AI-native email and human-behavior security company trusted by thousands of organizations.

### What is Evan Reiser's current role?

Evan Reiser is Co-founder & CEO at Abnormal AI.

### What is Evan Reiser known for?

Evan Reiser focuses on AI/ML security, Email/behavioral security, Product leadership, Cybersecurity entrepreneurship, Enterprise scaling.

### Where is Evan Reiser based?

Evan Reiser is based in San Francisco, CA, USA.

### What is Evan Reiser listed under on Cyber Resources?

Evan Reiser is listed in the Founders & CEOs category of Cyber Resources, the curated directory of the cybersecurity marketing and growth ecosystem.