Halcyon is a cybersecurity company that provides an anti-ransomware platform to protect businesses from ransomware attacks. It uses AI and behavioral engines to proactively prevent, detect, and respond to threats, and it offers automated recovery by capturing encryption keys to restore data.

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 Boldend, 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.