Meet Our Defenders



Defending against sophisticated cyber threats takes more than technology. It takes people. People with skills and innate qualities to outpace today’s evolving threat landscape. Qualities we call “defender DNA.”

Mark Sherman | Director, Managed Secuirty Services


What drives you to be a Defender?

Knowing how important our mission is to protect the world’s critical infrastructure. That is a daunting challenge, but one that is exciting to be a part of and makes it easy to want to come to work every day.

What is your strongest defender DNA quality?

My strongest defender quality is my ability to remain calm under pressure and adversity and concentrate on ensuring our team can come up with a solution to the problem at hand to help our customers deal with a rapidly advancing and evolving threat landscape.

How do you prove you have defender DNA?

I have worked in Cybersecurity for over 15 years, and as a result, I have an excellent appreciation for the challenges facing enterprises in Cyber. I have taken that knowledge and helped define a set of service offerings that will allow our customers to feel confident that they can use a Managed Security Service provider like Leidos to help detect and respond to malicious activity on their networks.

How does your defender DNA benefit Leidos clients?

My defender DNA results in always keeping our mission of protecting the world’s critical infrastructure at the forefront and continually improving our Managed Security Service offerings to best position our customers to ensure success.