Company profile
Halcyon
Anti-ransomware platform: a lightweight endpoint agent that stops ransomware before and during execution, File Resilience (FiRe) against kernel-level encryption behavior, key capture for fast recovery, and a 24/7…
- Status
- PrivateListed on CyberMerge Startup Radar (private vendors), snapshot Oct 13, 2026
- Valuation
- Undisclosed
- Latest funding
- Undisclosed
- HQ
- Austin, TX / US (Startup Radar)
- Last updated
Categories
Funding & valuation
Funding: Undisclosed — no round recorded in the CyberMerge Funding Tracker.
Latest signals
- Startup Radar · Threat Detection · snapshot Oct 13, 2026 13 Oct 2026: launched Double Extortion Prevention (DXP) on its existing endpoint agent. It cuts a process's connections to known-malicious infrastructure without killing the process, flags outbound data volumes above expected thresholds as possible exfiltration, and hands suspected theft to its Ransomware Operations Center. Windows, Linux and macOS at launch; company says the agent runs in 1,000 customer environments (PR Newswire). Last disclosed round: $100M Series C at a $1B valuation led by Evolution Equity Partners (Nov 2024), $190M total (Halcyon / Business Wire). Source
Competitors
Same-category peers from CyberMerge Research maps, Startup Radar and What's The Use tags.
- CriblPrivateSecurity telemetry / data engine used as the detection data plane (still private).
- IslandPrivateEnterprise browser plus AI Protect: prompts, tool calls, Island MCP Gateway — agentic control plane for…
- AnvilogicPrivateAgentic detection engineering and Detection-as-Code across SIEM and data lakes.
- ThreatBookPrivateChina-origin NDR / threat detection platform; Gartner NDR Niche Player (2025 MQ).
- HuntersPrivateSecurity data/SIEM platform purpose-built for detection engineering and SOC workflows.
- Query.AIPrivateFederated search across security data stores for investigation and hunting (no-copy).
- Stellar CyberPrivateOpen XDR / AI-native SecOps unifying SIEM, NDR, ITDR, and response (MSSP-oriented).
- 7AIPrivateSwarming AI agents that investigate and respond in the SOC; federated SIEM.
- CynetPrivateAll-in-one XDR/NGAV/EDR plus automated response for lean teams.
- Dropzone AIPrivateAutonomous AI SOC analyst agents for alert investigation and hunting.
- ExaforcePrivateAgentic SOC: knowledge graph, Exabots, and MDR.
- GlowPrivateEndpoint platform to map and control software, AI agents, and dev tools on devices.
Figures appear only as recorded in CyberMerge data, with source and date. “Undisclosed” means no published figure in our data. Editorial, not investment advice. Last updated . Spot an error? Tell the desk.