Hackers present many threats to a business. It
Hackers present many threats to a business. It could be through unauthorized access to confidential information or loss of data integrity, where the hacker alters the content, possibly to embarrass the content owner by substituting inappropriate material. The threats Although cracking the encryption may appear to be a common threat, it is difficult and can take a very long time. The more usual threat is theft of the keys. Some licenses are valid for a short time period; one method that has been employed to fool such licenses is to change the computer s date and time. A good DRM plug-in should be resistant to such manipulation. Video and audio content can be copied once in the analog domain. The wires to the loud speakers and the VGA connections to the computer monitor are both easy access points to make analog copies of audio/video content. It is difficult to prevent such attacks, just as it is difficult to stop somebody sitting in a movie theatre with a camcorder. Third-party audit Before investing a considerable sum in a DRM product, find out how secure it really is. Ask to see third-party audits, or instigate your own. Caveats No encryption is proof against determined efforts to crack. DRM makes piracy difficult, but does not prevent it. Other methods of defense of property rights will be necessary. Watermarking aids tracing of stolen content. Some level of theft is inevitable and should be included in the cost of sales. XrML As streamed media is handled by a number of applications during the processes and workflows of authoring and distribution, there is a need to express the content rights and the rules for access in a portable format through the content lifecycle. That means that information can be passed from one application to another without the need to develop custom interfaces. The Extensible rights markup language (XrML) is one such grammar. 280 The Technology of Video and Audio Streaming
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