The US Department of War has appointed James “Aaron” Bishop as Deputy Chief Information Officer (DCIO) for Cybersecurity and Chief Information Security Officer (CISO), strengthening its leadership in safeguarding national defense systems against evolving cyber threats. The role is considered critical, as it oversees department-wide cybersecurity strategy, policy, and implementation across one of the world’s most complex defense infrastructures.
Bishop assumed the position in an acting capacity on February 27, succeeding David McKeown, who is stepping down after more than four decades of government service. In his new role, Bishop will provide policy, technical, and program-level oversight to the Department’s Chief Information Officer, ensuring robust cybersecurity frameworks and coordination across defense operations.
He brings extensive experience across both government and private sectors, making him well-suited for the role. Prior to this appointment, Bishop served as Chief Information Security Officer for the US Air Force, where he was responsible for securing critical military systems and advancing cyber resilience initiatives.
Before his government tenure, Bishop held senior leadership roles in the private sector, including Vice President and CISO at Science Applications International Corporation (SAIC) and General Manager of Microsoft’s National Security Group. His experience also includes founding and leading cybersecurity-focused ventures, reflecting a strong blend of operational, strategic, and entrepreneurial expertise.
A Navy veteran, Bishop is recognized for his deep understanding of both defense operations and emerging cyber risks. His appointment comes at a time when the Department is prioritizing cybersecurity as a core component of national security, with increasing focus on protecting critical infrastructure, strengthening digital resilience, and integrating advanced technologies across defense systems.
With this leadership move, the Department of War aims to enhance its cybersecurity posture and ensure preparedness against sophisticated, large-scale cyber threats in an increasingly digital and interconnected defense environment.
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