Halcyon is a cybersecurity company providing an end-to-end anti-ransomware and cyber-resilience platform that uses layered defenses—pre-execution detection, behavioral modeling, and deception—backed by a 24/7 expert team and a ransomware warranty to stop attacks across the lifecycle, prevent data theft and encryption, avoid ransom payments, and keep businesses operational.

Industries

Network Management SoftwareComputer and Network SecurityCybersecuritySaaSArtificial Intelligence & Machine Learning

Type

Privately HeldUnicorn

Social Media

twitter

Company Size

Employees

540

Range501–1,000 employees

1101001K5K10K+

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Headquarters

San Diego, Ca, United States

Followers

27,632

Press Coverage

Date	Article	Publisher
Oct 9, 2025	Halcyon Appoints Veteran Channel Leader Dave Pawlowski as Worldwide Vice President of Channels and MSSP	PR Newswire
Jul 29, 2025	Halcyon Introduces First-of-Its-Kind Ransomware Research Center to Lead Global Coordinated Defense	PR Newswire
Jun 3, 2025	Cynthia Kaiser, the FBI's former deputy assistant director leading cyber policy, intel, and engagement, left to join cybersecurity company Halcyon as an SVP (Tim Starks/CyberScoop)	Techmeme
Mar 24, 2025	Halcyon Appoints Former Barclays CISO Oliver Newbury as Chief Strategy Officer	Business Wire
Jan 17, 2025	Former Barclay’s CISO Oliver Newbury Joins Halcyon as Strategic Advisor	citybiz
Jan 13, 2026	Halcyon Appoints Ryan Schultz as Chief Customer Officer	PR Newswire
Feb 23, 2026	Halcyon Appoints Scott Stout as President	PR Newswire
Apr 7, 2026	Halcyon Appoints Dave Hannigan as Field Chief Information Security Officer	PR Newswire
Nov 7, 2025	Washington Post Hit By Oracle Software Hack	Silicon UK
Nov 6, 2025	Morae and Halcyon Announce Strategic Partnership	PR Newswire

Contact Information

Generalp***@halcyon.ai

> ACCESS FULL DATASET

Specialties

cybersecuritysoftwareanti-ransomwareransomware

Event Appearances

RSA Conference 2023

Apr 24, 2023·Exhibitor

Product

Name	Description
Halcyon Anti-Ransomware Platform	A platform that prevents ransomware attacks by detecting attack precursors, intercepts encryption keys during attacks, and automatically decrypts affected endpoints to maintain business continuity.
Halcyon Data Exfiltration Protection (DXP)	A feature that automatically prevents ransomware attackers from stealing and exfiltrating sensitive data from victim networks.
Halcyon Sidekick Protection	A security feature that supports and protects existing endpoint security solutions by ensuring they remain uncompromised and communicate effectively.
Halcyon Key Material Intercept	A mechanism that captures encryption keys generated during ransomware attacks to enable automatic decryption and faster recovery.
Halcyon Greenlight Service	A service that assists in ransomware recovery by ensuring system hygiene and supporting keyless rapid recovery processes.
Halcyon Ransomware Warranty	A warranty program that supports recovery efforts by providing assurances related to ransomware incidents and recovery outcomes.