What is the use of computers and other devices to attack an enemy's information systems called?

The term that describes the use of computers and other devices to attack an enemy's information systems is cyber warfare. This term encompasses a range of malicious activities aimed not only at disrupting the operations of a target, but also at damaging its critical infrastructures, stealing sensitive information, or gaining strategic advantages in a conflict.

Cyber warfare typically involves sophisticated tactics that may include virus deployment, denial of service attacks, and other means of infiltrating and disrupting the information systems of adversaries. It distinguishes itself from acts like cyber terrorism, which is more focused on causing fear or disruption for ideological purposes, or from activities like data breaches and identity theft, which are primarily aimed at stealing data for personal gain rather than engaging in broader strategic conflicts.

Understanding the nuances between these terms is crucial in the field of cybersecurity and international relations, as they reflect different motivations and methodologies used in attacks against information systems.