Steganography
Applied to electronic files, steganography refers to the process of hiding information in files that can not be easily detected by users. Steganography can be used by intellectual property owners in a variety of ways. One is to insert into the file a "digital watermark" which can be used to prove that an infringing file was the creation of the copyright holder and not the pirate. Other possibilities are to encode a unique serial number into each authorized copy or file, enabling the owner to trace infringing copies to a particular source, or to store
Agents
Agents are programs that can implement specified commands automatically. Copyright owners can use agents to search the public spaces of the Internet to find infringing copies. Although the technology is not yet very well developed full-text search engines allow similar uses.
Copyright Litigation
While not every infringement will be the subject of litigation, the threat of litigation helps keep large pirate operations in check. It helps copyright owners obtain relief for specific acts of infringement and publicly warns others of the dangers of infringement.
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Following the 1980s a sweeping restructuring of commercial media power has happened. While some firms have grown through expansion others extended through mergers and acquisitions. Examples are
In recent years those developments have led to the rise of transnational media giants, resulting in the domination of the global media system by about ten huge conglomerates. These have interests in numerous media industries, ranging from film production, magazines, newspapers, book publishing and recorded music to TV and radio channels and networks, but also include retail stores, amusement parks and digital media products.
Behind these firms are about three or four dozen smaller media companies, which primarily engage in local, national or niche markets. In short, the overwhelming majority of the world's content production facilities and distribution channels lies in the hands of approximately fifty enterprises.
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"The multiple human needs and desires that demand privacy
among two or more people in the midst of social life must
inevitably lead to cryptology wherever men thrive
and wherever they write."
David Kahn, The Codebreakers
In the age of the vitreous man, whose data are not only collected by different institutions but kept under disclosure, out of reach, uncontrollable and unmanageable for the individual, privacy obtains new importance, receives a much higher value again.
The irony behind is that those who long for cryptography in order to preserve more privacy actually have to trust the same people who first created the methods to "produce" something like that vitreous man; of course not the same individual but persons of the same area of science. It is the reign of experts.
So far about self-determination.
for a rather aesthetic view on privacy and cryptography see:
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TCP and IP are the two most important protocols and communication standards. TCP provides reliable message-transmission service; IP is the key protocol for specifying how packets are routed around the Internet.
More detailed information can be found