An attempt by a malicious (or unwitting) user, process, or system to prevent legitimate users from accessing a resource (usually a network service) by exploiting a weakness or design limitation in an information system.
— Computer ScienceA generic term describing any operating system that is loaded from disk devices when the system is started or rebooted.
— Computer Science(Denial of Service)- A form of attack on (usually) an internet service, which aims to prevent the service from operating properly, often by bombarding it with more information than it can process. See also- Mailbomb.
— Computer Science