Longtime entrepreneur and cybersecurity executive Amit Yoran passed away Friday after a battle with cancer.

Cybersecurity company Tenable, where Yoran was CEO and chairman, announced his death in a press release. Before becoming Tenable’s CEO in 2016, he held a number of roles including president of RSA, founding CEO of NetWitness, and CEO of In-Q-Tel.

In a statement, Tenable’s lead independent director Art Coviello described Yoran as “an extraordinary leader, colleague, and friend.”

“His passion for cybersecurity, his strategic vision, and his ability to inspire those around him have shaped Tenable’s culture and mission,” Coviello said. “His legacy will continue to guide us as we move forward.” 

Tenable said Yoran took a medical leave of absence starting on December 5, with CFO Steve Vintz and COO Mark Thurmond appointed as co-CEOs in his place. They will continue in those roles while the company conducts a search for a permanent CEO.