A cyber attack is any offensive maneuver that targets computer information systems, computer networks, infrastructures, personal computer devices, or smartphones. It is an intentional effort to steal, expose, alter, disable, or destroy data, applications, or other assets through unauthorized access to a network, computer system, or digital device. Cybercriminals use a variety of methods to launch a cyber attack, including malware, phishing, ransomware, denial of service, among other methods. Cyberattacks can be part of cyber warfare or cyberterrorism and can be employed by sovereign states, individuals, groups, societies, or organizations, and may originate from an anonymous source. Cyberattacks can steal, alter, or destroy a specified target by hacking into a private network or otherwise susceptible system, and can range from installing spyware on a personal computer to attempting to destroy the infrastructure of entire nations. Cyberattacks can have serious consequences, including downtime, data loss, and money loss. Organizations can reduce cyberattacks by implementing cybersecurity systems and strategies.