Phyllis has more than 15 years of government and private-sector experience in senior cybersecurity positions and serves as Vice President and Chief Information Security Officer at Northrop Grumman. She previously led the cybersecurity practice at Promontory, after serving in the Department of Homeland Security as the deputy undersecretary for cybersecurity and communications and leading responses to cybersecurity threats against corporations, civilians, and the government. During her DHS tenure, Phyllis led the defensive cybersecurity operational mission to mitigate and respond to cyberthreats across the federal civilian government and private sector. She supported the department’s mission of strengthening the security and resilience of the nation’s critical infrastructure, working with all areas of the department, government agencies, law enforcement, and the private sector. Phyllis led the transformation of signature technology applying analytics to the central cyber protection that the DHS provides to civilian agencies.

Phyllis holds a Ph.D. in computer science from the Georgia Institute of Technology, as well as an M.S. in computer science and a B.S. in computer science and mathematics from The Johns Hopkins University.