Data protection systems and methods

• US 9,594,923 B2
• Filed: 07/23/2015
• Issued: 03/14/2017
• Est. Priority Date: 08/31/1999
• Status: Expired due to Fees

• Current Assignee: PLS IV, LLC (Pretium Partners, LLC)
• Original Assignee: Intertrust Technologies Corporation (Fidelio Acquisition Co LLC)
• Inventors: MacKay, Michael K., Sibert, W. Olin, Landsman, Richard A., Swenson, Eric J., Hunt, William
• Primary Examiner(s): CHEN, SHIN HON
• Application Number:
  US14/807,437
• Publication Number:
  US 20150379298A1
• Time in Patent Office: 600 Days
• Field of Search: None
• US Class Current: 1/1
• CPC Class Codes: G06F 21/10 Protecting distributed programs or content, e.g. vending or licensing of copyrighted material protection in video systems or pay television H04N7/16 ; Digital rights management [DRM]
• CPC Class Codes: G06F 21/1064 Restricting content processing at operating system level
• CPC Class Codes: G06F 21/16 Program or content traceability, e.g. by watermarking
• CPC Class Codes: G06F 21/55 Detecting local intrusion or implementing counter-measures
• CPC Class Codes: G06F 21/577 Assessing vulnerabilities and evaluating computer system security
• CPC Class Codes: G06F 21/6218 to a system of files or objects, e.g. local or distributed file system or database

Abstract

Systems and methods are provided for protecting electronic content from the time it is packaged through the time it is experienced by an end user. Protection against content misuse is accomplished using a combination of encryption, watermark screening, detection of invalid content processing software and hardware, and/or detection of invalid content flows. Encryption protects the secrecy of content while it is being transferred or stored. Watermark screening protects against the unauthorized use of content. Watermark screening is provided by invoking a filter module to examine content for the presence of a watermark before the content is delivered to output hardware or software. The filter module is operable to prevent delivery of the content to the output hardware or software if it detects a predefined protection mark. Invalid content processing software is detected by a monitoring mechanism that validates the software involved in processing protected electronic content. Invalid content flows can be detected by scanning the information passed across system interfaces for the attempted transfer of bit patterns that were released from an application and/or a piece of content management software.

Claims

1. A computer-implemented method for protecting electronic content from unauthorized use performed by a computer system comprising a processor and a non-transitory computer-readable storage medium storing executable instructions that cause the processor to perform the method, the method comprising:

receiving a request to process electronic content using a software module executing on the computer system;

accessing a control policy associated with the electronic content;

determining that the software module exhibits one or more predefined behaviors specified in the control policy, wherein determining that the software module exhibits one or more predefined behaviors comprises detecting an attempt by the software module to access one or more system interfaces that are not included in a list of predefined legitimate system interfaces; and

implementing at least one action to protect the electronic content from unauthorized use based on the determination, wherein the at least one action comprises modifying at least a portion of the electronic content before it is processed by the software module.

2. The method of claim 1, wherein the software module comprises one or more system drivers.

3. The method of claim 2, wherein the one or more system drivers comprises at least one of a video display driver, a sound driver, an SCSI driver, an IDE driver, a network driver, a video capture driver, a floppy disk driver, and a scanner driver.

4. The method of claim 1, wherein modifying at least a portion of the electronic content comprises scrambling at least a portion of the electronic content.

5. The method of claim 1, wherein modifying at least a portion of the electronic content comprises adding noise to at least a portion of the electronic content.

6. The method of claim 1, wherein modifying at least a portion of the electronic content comprises adding an electronic watermark to at least a portion of the electronic content.

7. The method of claim 1, wherein the at least one action further comprises preventing the software module from processing the electronic content.

8. The method of claim 1, wherein the electronic content comprises electronic media content.

9. The method of claim 1, wherein determining that the software module exhibits one or more predefined behaviors further comprises detecting the software module exhibiting one or more predefined timing characteristics.

10. The method of claim 9, wherein the one or more predefined timing characteristics comprises a request response time greater than a predefined threshold response time.

11. The method of claim 9, wherein the one or more predefined timing characteristics comprises a request response time shorter than a predefined threshold response time.

12. A non-transitory computer-readable storage medium storing instructions that, when executed by a processor of a computer system, cause the computer system to perform a method comprising:

receiving a request to process electronic content using a software module executing on the computer system;

accessing a control policy associated with the electronic content;

determining that the software module exhibits one or more predefined behaviors specified in the control policy, wherein determining that the software module exhibits one or more predefined behaviors comprises detecting an attempt by the software module to access one or more system interfaces that are not included in a list of predefined legitimate system interfaces; and

implementing at least one action to protect the electronic content from unauthorized use based on the determination, wherein the at least one action comprises modifying at least a portion of the electronic content before it is processed by the software module.

13. The non-transitory computer-readable storage medium of claim 12, wherein determining that the software module exhibits one or more predefined behaviors further comprises detecting the software module exhibiting one or more predefined timing characteristics.

14. The non-transitory computer-readable storage medium of claim 13, wherein the one or more predefined timing characteristics comprise at least one of:

a request response time greater than a first predefined threshold response time, and a request response time shorter than a second predefined threshold response time.

15. The medium of claim 12, wherein modifying at least a portion of the electronic content comprises scrambling at least a portion of the electronic content.

16. The medium of claim 12, wherein modifying at least a portion of the electronic content comprises adding noise to at least a portion of the electronic content.

17. The medium of claim 12, wherein modifying at least a portion of the electronic content comprises adding an electronic watermark to at least a portion of the electronic content.

18. The medium of claim 12, wherein the at least one action further comprises preventing the software module from processing the electronic content.