METHOD, SYSTEM AND DEVICE FOR ENHANCING BUSINESS INFORMATION SECURITY

摘要

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.

主权项

1. A method for creating an electronic document file on a client device to enhance business information security, the method comprising:
monitoring creation of an electronic document file on a client device and changes on the electronic document file; receiving a policy file from a server, the policy file including regular expressions, keywords, security policy and document level set-up information, the document level set-up information including importance of words associated with business information, document level policy and user accessibility policy which defines a user's accessibility to a document according to a document level; retrieving a text data from the electronic document file; searching for words associated with business information from the retrieved text data; computing an exposure score, the exposure score indicating the sum of multiplying the number of times for words associated with business information being searched and the importance on words associated with business information; assigning a document level to the electronic document file based on the exposure score; receiving a user's personal information of the client device from the server and inserting a watermark to text of the electronic document file to be displayed on the client device based on the received user's personal information; based on the assigned document level to the electronic document file, performing a security processing according to the security policy, the security processing including one of deletion, isolation, encryption and notification; and creating a protected electronic document file by inserting an accessibility information into a header of the electronic document file.