"We believe it's essential to combine expertise from both the private and public sectors if businesses and governments want to stand a chance against cyber criminals. Michael's understanding of the changing cyber-landscape and exceptional leadership experience will be paramount for our federal, state, and local customers, as well as private companies who are preparing for inevitable cyber attacks."
Mestrovich brings more than 20 years of distinguished IT and security leadership experience to Rubrik.
He most recently served as the CIA's acting CISO. His previous public sector roles included principal deputy CIO at the US Department of State, director of the CIA's technical services office, and chief architect in the Defense Intelligence Agency's intelligence community desktop joint program management office.
Earlier in his career Mestrovich was a systems engineer with Cisco and served in the US Air Force.
He holds a bachelor's degree in computer science from the University of Notre Dame, and a master's in atmospheric science from Creighton University (US).
"With increased vulnerabilities in existing infrastructure and legacy security solutions, organisations' most critical asset - data - is more vulnerable than ever," said Mestrovich.
"I made the decision to return to the private sector at this critical juncture to work with the company that is pioneering the next frontier in cyber security: data security. I am thrilled to join the world-class team at Rubrik and look forward to working together to secure the world's data."