Halcyon Closes Oversubscribed $40M Series B Funding with Bain Capital Ventures as Lead

Halcyon announced it closed a $40M Series B round led by Bain Capital Ventures, with Enrique Salem joining the board and Jeff Williams joining as Chief Revenue Officer; the release promotes Halcyon's AI/ML-driven anti-ransomware platform that claims multi-layer prevention, agent hardening, autonomous host isolation, encryption key capture, and automated decryption. The company positions the product as complementary to existing endpoint solutions, emphasizes ransomware resilience for enterprise customers, and states the new funding will be used to expand engineering, R&D, and sales.