Our Mission: Defeat Ransomware

Modern defensive cyber solutions, while impressive, have failed in the face of cheap and easy-to-create – and most importantly lucrative – ransomware. High-profile breaches are disguising an ugly fact; the companies using next-generation NGAV and EPP solutions continue to be impacted by ransomware.

Halcyon has built the first anti-ransomware engine to tackle this problem. Our team has spent decades building name-brand security products and delivering security consulting to much of the Fortune 500.

Our Origin Story

Halcyon formed in 2021 by a team of cybersecurity industry veterans after battling the scourge of ransomware (and advanced threats) for years, at some of the largest global security vendors. Comprised of leaders from Cylance (now Blackberry), Accuvant (now Optiv), and ISS X-Force (now IBM), Halcyon is focused on building products and solutions for mid-market and enterprise customers. Headquartered in San Diego, CA and in Austin, TX we are unified by our globally distributed workforce and our mission.

Halcyon Headquarters Austin TX skyline over river and downtown

Backed by The Best

Our Leadership Team

Jon Miller

CEO & Co-founder

Jon was the Chief Research Officer of Cylance (now Blackberry) where he focused on malware and product efficacy. Prior to Cylance, Jon was employee number 70 at Accuvant (now Optiv) where with a group of others he helped build and lead the largest technical consultancy at the time Accuvant LABS, working with over 95% of the Fortune 500 as an offensive security expert.

Before Accuvant, Jon was a ten year veteran penetration tester, serving as one of the first in the industry working for the Internet Security Systems (now IBM) X-Force.

Jon is frequently featured in the media as an expert in information security and nation state cyber warfare, he has been featured as a guest on 60 minutes multiple times.

Ryan Smith

CTO & Co-founder

Ryan has spent 25+ years as a pioneer in the information security space. One of the industries first researchers, Ryan is an industry recognized expert in vulnerability identification, exploitation, defensive security product architecture, and machine learning.

Starting his career as an engineer he became a master of lower level languages and architectures, then applied those concepts to identifying vulnerabilities inside compiled binaries and protocols.

Previously Ryan served as VP, Research of Cylance (now Blackberry), CTO of Exodus Intelligence, Chief Scientist of Optiv and Accuvant LABS, a security researcher at multiple Fortune 500 companies, as well as a consultant in his early years. Jon met Ryan in the early 2000s and have worked closely ever since.

Chris Vincent


Alex Espinoza

SVP of Engineering

Clark Lindsey

Chief Architect

Aaron Mick

Chief Operating Officer

Ryan Golden

Chief Marketing Officer

David Bonvillain

VP of Sales Engineering

Jon Steinbach

President of Federal

Join a world-class team that's scaling quickly.

With decades of experience building defensive and offensive technologies, the Halcyon team, which includes founding executives and engineers from Cylance and Optiv, has designed the first lightweight, easy-to-deploy security layer focused solely on disrupting ransomware attacks.

Ready to put an end to ransomware, once and for all? We’re hiring talented people in a variety of roles across research, engineering, data science, dev ops, and more. We’re always looking for technical talent, if you don’t see an immediate fit, email us: careers@halcyon.ai

See Open Opportunities

Learn more about Halcyon

The Halcyon Platform

Halcyon is the industry’s first dedicated, adaptive security platform focused specifically on stopping ransomware attacks. Halcyon is built by offensive security experts to stop attackers. Our platform is a lightweight agent that combines multiple proprietary advanced prevention engines along with AI models trained solely on ransomware.

Ready to get a demo? Fill out the form and let’s talk!

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Meet with a Halcyon Anti-Ransomware Expert

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