OMB stands for the Office of Management and Budget, the White House office that coordinates federal budget and management policy. It helps shape how agencies plan spending, justify programs, and apply management rules, including controls that affect technology, procurement, and oversight.
In cyber security, OMB matters because budget authority often decides whether agencies can fund security tools, staff incident response teams, modernize legacy systems, or enforce compliance. Strong OMB guidance can push consistent security baselines across government, while weak delegation or unclear approvals can create delays and accountability gaps. Attackers do not “hack” OMB itself in the usual sense, but they benefit when security work is underfunded, fragmented, or slowed by poor governance. Defenders watch OMB because budget and policy choices can directly strengthen or weaken the control environment around sensitive systems.