About Us

Dedicated to the midsize enterprise with expanding cybersecurity needs

CyberESI is a Managed Security Service Provider founded in 2010.  Our founders are cybersecurity experts with experience serving the US Government and the National Institute of Standards and Technology as well as commercial industry leaders.

Focusing on the midsize enterprise with expanding cybersecurity needs, we provide 24x7x365 remote security monitoring and management of your mission-critical networks.  Our expert staff also offers a range of professional services to assess your risks, establish the right security policies and procedures, and improve your overall security posture.

CyberESI team members (l to r) Jim Hanson, Joe Drissel, Andy Silberstein, Ron de Leos and Roman Sheriff

Leadership Team


Joseph Drissel

Founder and CEO

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Andrew Silberstein

Chief Commercial Officer

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Jim Hanson

Director of Engineering and Development

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Ron de Leos

Director, Government Security Services

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Roman Sheriff

Technical Director, Cybersecurity Services

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