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Definition and purpose. An operating system is difficult to define, but has been called "the layer of software that manages a computer's resources for its users and their applications". Operating systems include the software that is always running, called a kernel—but can include other software as well.
t. e. A user is a person who utilizes a computer or network service. A user often has a user account and is identified to the system by a username (or user name ). [a] Some software products provide services to other systems and have no direct end users .
Internet Protocol television ( IPTV) is the delivery of television content over Internet Protocol (IP) networks. This is in contrast to delivery through traditional terrestrial, satellite, and cable transmission formats. Unlike downloaded media, IPTV offers the ability to stream the source media continuously and hence can begin playing the ...
User identifier. Unix-like operating systems identify a user by a value called a user identifier, often abbreviated to user ID or UID. The UID, along with the group identifier (GID) and other access control criteria, is used to determine which system resources a user can access. The password file maps textual user names to UIDs.
YouTube is an American online video-sharing platform headquartered in San Bruno, California, founded by three former PayPal employees— Chad Hurley, Steve Chen, and Jawed Karim —in February 2005. Google bought the site in November 2006 for US$1.65 billion, since which it operates as one of Google's subsidiaries .
t. e. A registered user is a user of a website, program, or other systems who has previously registered. Registered users normally provide some sort of credentials (such as a username or e-mail address, and a password) to the system in order to prove their identity: this is known as logging in. Systems intended for use by the general public ...
The history of the Internet has its origin in the efforts of scientists and engineers to build and interconnect computer networks.The Internet Protocol Suite, the set of rules used to communicate between networks and devices on the Internet, arose from research and development in the United States and involved international collaboration, particularly with researchers in the United Kingdom and ...
Doxware is the converse of ransomware. In a ransomware attack (originally called cryptoviral extortion), the malware encrypts the victim's data and demands payment to provide the needed decryption key. In the doxware cryptovirology attack, the attacker or malware steals the victim's data and threatens to publish it unless a fee is paid.