Electronic Document Security via Exposure Scoring and Watermarking
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Solution Overview
Problem
Conventional DRM and DLP methods for business information security are inadequate due to risks of content leakage, vulnerability to advanced hacking techniques, and limitations in protecting sensitive information across various devices, especially in a mobile business environment.
Innovation Solution
A method and system that integrates DRM and DLP functions by computing an exposure score for electronic documents based on search data, applying security processing such as encryption and watermarking, and controlling user accessibility, with a focus on client device security to prevent information leakage and track unauthorized access.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If DRM method is used to encrypt and control access to documents, then user accessibility is improved, but content leakage risk increases
Solution Approach 1:
The patent combines DRM encryption technology with DLP monitoring technology into a unified security system. The DRM component encrypts documents and controls user accessibility, while the DLP component monitors document usage and detects leakage attempts. By merging these two previously separate systems, the patent achieves both improved user accessibility through encryption-based access control and reduced content leakage risk through active monitoring and response mechanisms.
2Measurement precision
If DLP method is used to search and monitor documents, then leakage detection is improved, but security against external hacking worsens
Solution Approach 1:
The patent integrates DLP's search and monitoring capabilities with DRM's encryption and access control mechanisms. The DLP component continues to provide precise leakage detection through document searching and usage monitoring, while the DRM component adds strong encryption and access control that protects against external hacking attempts. The unified system allows documents to be monitored for leakage while simultaneously being protected by encryption barriers against external threats.
3Device complexity
If conventional security systems are used, then implementation simplicity is improved, but adaptability to mobile devices and advanced threats worsens
Solution Approach 1:
The patent creates a universal security system that functions across multiple device types including desktop computers, mobile devices, tablets, and various operating systems. The system provides multi-functional protection by combining encryption, access control, monitoring, and response capabilities in a single platform that can be deployed across diverse environments. This universal approach maintains implementation simplicity while significantly improving adaptability to mobile devices and advanced threats compared to conventional single-purpose security solutions.
Data Source
AI summary
The present invention provides a method for creating an electronic document file comprising monitoring creation and changes of an electronic document file, receiving a policy file including document level set-up information and security policy, searching for words associated with business information from the text data retrieved from the electronic document file, computing an exposure score of the electronic document file based on the number of times for words associated with business information being searched and document level set-up information, assigning a document level to the electronic document file based on the exposure score, and inserting a watermark to text of the electronic document file to be displayed on the client device based on the user's personal information received from the server. Accordingly, leakage of business documents for electronic document files including business information can be prevented by providing pre-security and post-security measures stronger than conventional measures.