The propaganda leaflets are produced by U.S. Army Psychological Operation units, known as "PsyOps" units.

CNN: NATO leaflets warn Serb troops of 'certain death'

Related and supporting capabilities include computer network operations, electronic warfare, deception, operations security (OPSEC), intelligence, perception management, psychological operations (PSYOPs), and public affairs.

FORBES: DOD Cyberspace Strategy is Too Narrow, Too Negative

At times, it even moves beyond just thinking about defense of physical infrastructure and information-as-commodity to address the role of information operations more broadly conceived, including PSYOPs, deception, etc.

FORBES: DOD's "First" Cyber Strategy is Neither First, Nor a Strategy

Defending information as a commodity (e.g. assuring confidentiality, integrity, and availability) can sometimes clash with the uses to which information is put (e.g. public affairs, perception management, PSYOPs, intelligence, etc.).

FORBES: DOD Cyberspace Strategy is Too Narrow, Too Negative