Summit Remarks John W. Wilmer, the Defense Department’s deputy chief information officer for cybersecurity and chief information security officer, speaks at the 10th annual Billington Cybersecurity Summit in Washington, Sept. 4, 2019. SHARE IMAGE: Download Image: Full Size (0.4 MB) Tags: cyber Photo By: David Vergun, DOD VIRIN: 190904-D-UB488-006Y.JPG Photo Gallery