Patents by Inventor Yu Jung Han

Yu Jung Han has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 8955124
    Abstract: Provided are an apparatus, system and method for detecting malicious code inserted into a normal process in disguise. The apparatus includes a malicious code detection module for extracting information on a thread generated by a process running on a computer system to identify code related to the thread, preliminarily determining whether or not the identified code is malicious and extracting the code preliminarily determined to be malicious; and a forcible malicious code termination module for finally determining the code as malicious code based on an analysis result of behavior of the extracted code executed in a virtual environment and forcibly terminating execution of the code.
    Type: Grant
    Filed: January 5, 2011
    Date of Patent: February 10, 2015
    Assignee: Electronics and Telecommunications Research Institute
    Inventors: Yo Sik Kim, Sang Kyun Noh, Yoon Jung Chung, Dong Soo Kim, Won Ho Kim, Yu Jung Han, Young Tae Yun, Ki Wook Sohn, Cheol Won Lee
  • Patent number: 8706866
    Abstract: Provided are a virtual server and method for identifying a zombie, and a sinkhole server and method for integratedly managing zombie information. The virtual server includes an authentication processing module authenticating a host using a CAPTCHA test and providing a cookie to the authenticated host when a web server access request message received from the host does not include a cookie, a cookie value verification module for extracting a cookie value from the web server access request message and verifying the extracted cookie value when the web server access request message includes a cookie, a web page access inducement module for inducing the host to access a web server when the cookie value is verified, and a zombie identification module for blocking access of the host when the cookie value is not verified, and identifying the host as a zombie when the number of blocking operations exceeds a threshold value.
    Type: Grant
    Filed: January 6, 2011
    Date of Patent: April 22, 2014
    Assignee: Eletronics and Telecommunications Research Institute
    Inventors: Sang Kyun Noh, Young Tae Yun, Dong Soo Kim, Yo Sik Kim, Yoon Jung Chung, Won Ho Kim, Yu Jung Han, Cheol Won Lee
  • Publication number: 20110270969
    Abstract: Provided are a virtual server and method for identifying a zombie, and a sinkhole server and method for integratedly managing zombie information. The virtual server includes an authentication processing module authenticating a host using a CAPTCHA test and providing a cookie to the authenticated host when a web server access request message received from the host does not include a cookie, a cookie value verification module for extracting a cookie value from the web server access request message and verifying the extracted cookie value when the web server access request message includes a cookie, a web page access inducement module for inducing the host to access a web server when the cookie value is verified, and a zombie identification module for blocking access of the host when the cookie value is not verified, and identifying the host as a zombie when the number of blocking operations exceeds a threshold value.
    Type: Application
    Filed: January 6, 2011
    Publication date: November 3, 2011
    Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE
    Inventors: Sang Kyun Noh, Young Tae Yun, Dong Soo Kim, Yo Sik Kim, Yoon Jung Chung, Won Ho Kim, Yu Jung Han, Cheol Won Lee
  • Publication number: 20110271343
    Abstract: Provided are an apparatus, system and method for detecting malicious code inserted into a normal process in disguise. The apparatus includes a malicious code detection module for extracting information on a thread generated by a process running on a computer system to identify code related to the thread, preliminarily determining whether or not the identified code is malicious and extracting the code preliminarily determined to be malicious; and a forcible malicious code termination module for finally determining the code as malicious code based on an analysis result of behavior of the extracted code executed in a virtual environment and forcibly terminating execution of the code.
    Type: Application
    Filed: January 5, 2011
    Publication date: November 3, 2011
    Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE
    Inventors: Yo Sik Kim, Sang Kyun Noh, Yoon Jung Chung, Dong Soo Kim, Won Ho Kim, Yu Jung Han, Young Tae Yun, Ki Wook Sohn, Cheol Won Lee