Shuang J Ji

US Patent:

6728886, Apr 27, 2004

Filed:

Dec 1, 1999

Appl. No.:

09/452918

Inventors:

Shuang Ji - Santa Clara CA
Renkui Tao - Nanjing, CN

Assignee:

Trend Micro Incorporated - Cupertino CA

International Classification:

G06F 1130

US Classification:

713201, 713200, 714 26, 714 38

Abstract:

Detecting viruses that may be transferred between a distributed computer network, such as the Internet, and a host computer. A host computer performs its own virus scanning on data, using executables code downloaded to its browser upon a request for data from the Internet, such as an HTTP request. Code is downloaded to the host computer, and is configured to create a virus scan module on the host computer upon such a request. The module is used to detect viruses in data transferred between the host computer and the Internet. Virus scanning is performed thereafter on the host computer. In cases where certain browsers may not be capable of supporting local virus scanning, code is first downloaded to determine whether local scanning is possible. If so, the virus scan module is then downloaded and executed.

US Patent:

7971254, Jun 28, 2011

Filed:

Aug 24, 2004

Appl. No.:

10/925716

Inventors:

Shuang Ji - Santa Clara CA, US
Yong Pan - Nanjing, CN
Renkui Tao - Nanjing, CN
Hong-Wu David Lu - Cupertino CA, US

Assignee:

Netgear, Inc. - San Jose CA

International Classification:

G06F 11/00
G06F 12/14
G06F 12/16
G08B 23/00

US Classification:

726 24, 380 4, 703 28, 709200, 709203, 709217, 709221, 709222, 709223, 709219, 709224, 709246, 713 22, 713 23, 713 26, 713187, 713188, 713189, 713200, 713201, 726 14, 726 22, 726 23, 726 25, 726 27, 726 28, 726 29, 726 30

Abstract:

This invention relates generally to systems and methods for rapid, low-latency detection of viruses in network transmissions and specifically to methods for determining which parts of a network transmission might contain viruses and checking and cleaning only those parts of the transmission which could potentially be infected as soon as sufficient information is available for such a check.

US Patent:

59833483, Nov 9, 1999

Filed:

Sep 10, 1997

Appl. No.:

8/926619

Inventors:

Shuang Ji - Santa Clara CA

Assignee:

Trend Micro Incorporated - Cupertino CA

International Classification:

G06F 1300

US Classification:

713200

Abstract:

A network scanner for security checking of application programs (e. g. Java applets or Active X controls) received over the Internet or an Intranet has both static (pre-run time) and dynamic (run time) scanning. Static scanning at the HTTP proxy server identifies suspicious instructions and instruments them e. g. a pre-and-post filter instruction sequence or otherwise. The instrumented applet is then transferred to the client (web browser) together with security monitoring code. During run time at the client, the instrumented instructions are thereby monitored for security policy violations, and execution of an instruction is prevented in the event of such a violation.

US Patent:

56236000, Apr 22, 1997

Filed:

Sep 26, 1995

Appl. No.:

8/533706

Inventors:

Shuang Ji - Foster City CA
Eva Chen - Cupertino CA

Assignee:

Trend Micro, Incorporated - Cupertino CA

International Classification:

G06F 1134

US Classification:

39518701

Abstract:

A system for detecting and eliminating viruses on a computer network includes a File Transfer Protocol (FTP) proxy server, for controlling the transfer of files and a Simple Mail Transfer Protocol (SMTP) proxy server for controlling the transfer of mail messages through the system. The FTP proxy server and SMTP proxy server run concurrently with the normal operation of the system and operate in a manner such that viruses transmitted to or from the network in files and messages are detected before transfer into or from the system. The FTP proxy server and SMTP proxy server scan all incoming and outgoing files and messages, respectively before transfer for viruses and then transfer the files and messages, only if they do not contain any viruses. A method for processing a file before transmission into or from the network includes the steps of: receiving the data transfer command and file name; transferring the file to a system node; performing virus detection on the file; determining whether the file contains any viruses; transferring the file from the system to a recipient node if the file does not contain a virus; and deleting the file if the file contains a virus.

US Patent:

62726412, Aug 7, 2001

Filed:

Nov 9, 1999

Appl. No.:

9/437578

Inventors:

Shuang Ji - Santa Clara CA

Assignee:

Trend Micro, Inc. - Cupertino CA

International Classification:

G06F 1130
G06F 124
H04K 100

US Classification:

713201

Abstract:

A network scanner for security checking of application programs (e. g. Java applets or Active X controls) received over the Internet or an Intranet has both static (pre-run time) and dynamic (run time) scanning. Static scanning at the HTTP proxy server identifies suspicious instructions and instruments them e. g. a pre-and-post filter instruction sequence or otherwise. The instrumented applet is then transferred to the client (web browser) together with security monitoring code. During run time at the client, the instrumented instructions are thereby monitored for security policy violations, and execution of an instruction is prevented in the event of such a violation.

US Patent:

58899430, Mar 30, 1999

Filed:

Mar 29, 1996

Appl. No.:

8/625800

Inventors:

Shuang Ji - Foster City CA
Eva Chen - Cupertino CA
Yung-Chang Liang - Cupertino CA
Warren Tsai - Taipei, TW

Assignee:

Trend Micro Incorporated

International Classification:

G06F 1300
G07D 700
H04L 900

US Classification:

39518701

Abstract:

The detection and elimination of viruses on a computer network is disclosed. An apparatus for detecting and eliminating viruses which may be introduced by messages sent through a postal node of a network electronic mail system includes polling and retrieval modules in communication with the postal node to determine the presence of unscanned messages and to download data associated with them to a node for treatment by a virus analysis and treatment module. A method for detecting and eliminating viruses introduced by an electronic mail system includes polling the postal node for unscanned messages, downloading the messages into a memory of a node, and performing virus detection and analysis at the node.