• Stellar Cyber expands Autonomous SOC capabilities with agentic AI
  • We’ve seen ransomware cost American lives. Here’s what it will actually take to stop it.
  • Halcyon Raises $21M Series A To Bring AI-Powered Intelligence to the Energy Industry
  • Researchers Warn of New “Vect” RaaS Variant
  • What the Nike Breach Teaches Us About the Microsegmentation Imperative of Integrating with EDR
  • Sicarii ransomware locks your data and throws away the keys
  • Theorem wants to stop AI-written bugs before they ship — and just raised $6M to do it
  • Halcyon Secures $21M Series A Funding Led by Energize Capital
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About Halcyon

Halcyon is an American cybersecurity company headquartered in Austin, Texas, specializing in ransomware prevention and cyber resilience. Its core platform helps global enterprises defend against ransomware, enable rapid endpoint recovery, and maintain business continuity through multi-layer protection including encryption detection, key capture, automated decryption, and data extortion prevention. The company emphasizes end-to-end ransomware detection and recovery with 24x7 monitoring and a ransomware warranty, along with professional services to harden defenses and recover from incidents. Halcyon markets a comprehensive cyber resilience solution designed to undo attacks within minutes and reduce downtime for organizations worldwide.

Recent News

Stellar Cyber Expands Autonomous SOC Capabilities with Agentic AI

We’ve Seen Ransomware Cost American Lives. Here’s What It Will Actually Take to Stop It.

Halcyon Raises $21M Series A To Bring AI-Powered Intelligence to the Energy Industry

Researchers Warn of New “Vect” RaaS Variant

What the Nike Breach Teaches Us About the Microsegmentation Imperative of Integrating with EDR

Sicarii Ransomware Locks Your Data and Throws Away the Keys

Theorem Wants to Stop AI-Written Bugs Before They Ship — and Just Raised $6M to Do It

Recent Deals

Halcyon Secures $21M Series A Funding Led by Energize Capital

March 18, 2026

Key Team Members

Jon Miller

CEO & Co-Founder

Ryan Smith

CTO & Co-Founder

Kelly Fiedler

Chief Marketing Officer

Tom Lee

Chief Information Officer

Maya Ackley

VP, Strategic Growth & Market Expansion

Key Facts

HQ Location

Austin, United States

Founded

2021

Employees

201 - 500

Status

Investor

Investor Type

Corporate Investor

Website

https://halcyon.ai