Computer network malicious code scanner

Details Computer network malicious code scanner Computer network malicious code scanner

1997-09-10

1999-11-09

Wright, Norman Michael

Electrical computers and digital processing systems: support

Multiple computer communication using cryptography

Protection at a particular protocol layer

714 38, G06F 1300

Patent

active

059833483

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.

REFERENCES:
patent: 5257381 (1993-10-01), Cook
patent: 5359659 (1994-10-01), Rosenthal
patent: 5390232 (1995-02-01), Freeman et al.
patent: 5623600 (1997-04-01), Ji et al.
patent: 5805829 (1998-09-01), Cohen et al.

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