07328453 is referenced by 133 patents and cites 225 patents.

A number of systems and methods, alone, or in combination, achieve various levels of protection against unauthorized modification and distribution of digital content. This encompasses at least unauthorized study, modification, monitoring, reconstruction, and any other means for subversion from the originally intended purpose and license model of the digital content. The invention combines a number of techniques that in whole, or in part, serve to protect such content from unauthorized modification, reconstructive engineering, or monitoring by third parties. This is accomplished by means of methods which protect against subversion by specific tools operating on specific platforms as well as general tools operating on general platforms. Specific time domain attacks are identified, code modification can be identified and reversed, and virtual and emulated systems are identified. In addition, identification of in-circuit emulator tools (both software and hardware), debuggers, and security threats to running programs can be achieved.

Title
Systems and methods for the prevention of unauthorized use and manipulation of digital content
Application Number
10/142366
Publication Number
7328453 (B2)
Application Date
May 9, 2002
Publication Date
February 5, 2008
Inventor
Jose L Bouza
Osterville
MA, US
John J Hart III
Mashpee
MA, US
Jeffrey A Pagliarulo
West Barnstable
MA, US
Daniel M Goldman
North Falmouth
MA, US
Daniel G Howard
Mashpee
MA, US
Andrew R Lee
Marlborough
MA, US
Richard B LeVine
Marstons Mills
MA, US
James A Merkle Jr
Rochester Hills
MI, US
Agent
Mills & Onello
Assignee
ECD Systems
MA, US
IPC
G06F 12/14
G06F 11/00
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