A cellphone (also called a mobile phone) virus is the equivalent to a computer virus, only it infects consumer cellphones and spreads by way of MMS attachments, Bluetooth transfers, and Internet downloads. The most common type of cellphone virus is one that travels from computers to cellphones by way of infected files that are downloaded from the Internet. However cellphone-to-cellphone viruses, while less common, do exist.
The first known cellphone virus was called Cabir and was detected in June 2004 by Kaspersky Labs. The Cabir worm was coded to infect Symbian OS cellphones. Cabir was designed to scan for all accessible phones using Bluetooth technology, and send a copy of itself to the first one found. Setting your phone into a non-discoverable (hidden) Bluetooth mode will protect your phone from the Cabir worm. But, once the phone is infected it will try to infect other systems even if you try to disable Bluetooth from system settings. In 2005 Cabir’s source code became widely available on the Internet.
(sel´ū-l&r) (adj.) Refers to communications systems, especially the Advance Mobile Phone Service (AMPS), that divide a geographic region into sections, called cells. The purpose of this division is to make the most use out of a limited number of transmission frequencies. Each connection, or conversation, requires its own dedicated frequency, and the total number of […]
- center channel
In a surround sound system the center channel refers to the channel which produces the audio which should come from directly in front of the viewer from a center front location.
- central tunneling
In VPN technology, central tunneling is the process of forcing all traffic from a remote VPN through a central site. Central tunneling allows additional security as remote VPN users are protected by a firewall at the central site, and also enables NAT, IDS, IPS and anti-virus and spam filtering. Central tunneling does increase bandwidth at […]
- centralized network
A type of network where all users connect to a central server, which is the acting agent for all communications. This server would store both the communications and the user account information. Most public instant messaging platforms use a centralized network. Also called centralized server-structure.
Short for central office exchange service, a type of PBX service in which switching occurs at a local telephone station instead of at the company premises. Typically, the telephone company owns and manages all the communications equipment necessary to implement the PBX and then sells various services to the company.