An "attack" refers to an aggressive action aimed at causing harm or damage to a person, group, or system. In the context of cybersecurity, attacks can involve unauthorized access to computer systems, data breaches, or the deployment of malicious software. These actions can disrupt services, steal sensitive information, or compromise the integrity of digital assets. In military terms, an attack is a coordinated effort to engage an enemy force, often involving strategic planning and the use of various weapons. Attacks can be defensive or offensive, depending on the objectives of the involved parties. Understanding the nature of attacks is crucial for developing effective defense strategies.