![]() On March 10, 2010, the hacker called Colibri published after previous work done in 2005 a cryptanalysis of a PowerVU system implementation. Most PowerVu users are professional cable or satellite companies, using the service and equipment for signal redistribution, because regular users cannot afford it. PowerVu is considered highly secure since it uses a complicated system to authorize each PowerVu receiver and trace its history of ownership and usage. These decoders can also be used just like the FTA (Free-To-Air) satellite receivers if properly configured. PowerVu has decoders that decode signals from certain satellites for cable distribution services. PowerVu is also used by cable companies to prevent viewing by unauthorized viewers. It is used for professional broadcasting, notably by Retevision, Bloomberg Television, Discovery Channel, AFRTS, and American Forces Network. ![]() ![]() PowerVu is a conditional access system for digital television developed by Scientific Atlanta. Unencrypted satellite feeds allowed anyone with the correct equipment to view the program material. Prior to its development, “ad-hoc” or “Occasional Use” satellite news feeds were transmitted either using proprietary encryption methods (PowerVu) or without any encryption. īasic Interoperable Scrambling System, usually known as BISS, is a satellite signal scrambling system developed by the European Broadcasting Union and a consortium of hardware manufacturers. ![]() DBS transmissions use various methods to secure the data transfer: DBS is used by vendors such as DISH and DirecTV. Direct broadcast satellites (DBS) is common to consumers. Only one transmission either from the ground station to the satellite or from the satellite to the ground station can occur at a time. Many commercial satellites use baseband signals, a method that allows for only one car on the road at a time so to speak. There are several methods for communicating with satellites. ![]()
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