tailieunhanh - The Internet Worm Incident Technical Report CSD-TR-933*

Tham khảo tài liệu 'the internet worm incident technical report csd-tr-933*', công nghệ thông tin, quản trị mạng phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả | The Internet Worm Incident Technical Report CSD-TR-933 Eugene H. Spafford Department of Computer Sciences Purdue University West Lafayette IN USA 47907-2004 spaf@ On the evening of 2 November 1988 someone infected the Internet with a worm program. That program exploited flaws in utility programs in systems based on BSD-derived versions of Unix. The flaws allowed the program to break into those machines and copy itself thus infecting those systems. This program eventually spread to thousands of machines and disrupted normal activities and Internet connectivity for many days. This paper explains why this program was a worm as opposed to a virus and provides a brief chronology of both the spread and eradication of the program. That is followed by discussion of some specific issues raised by the community s reaction and subsequent discussion of the event. Included are some interesting lessons learned from the incident. September 19 1991 The Internet Worm Incident Technical Report CSD-TR-933 Eugene H. Spafford Department of Computer Sciences Purdue University West Lafayette IN USA 47907-2004 spaf@ 1. Introduction Worldwide over 60 000 computers in interconnecting networks communicate using a common set of protocols the Internet Protocols IP . 7 15 On the evening of 2 November 1988 this network the Internet came under attack from within. Sometime after 5 PM EST a program was executed on one or more of these hosts. That program collected host network and user information then used that information to establish network connections and break into other machines using flaws present in those systems software. After breaking in the program would replicate itself and the replica would attempt to infect other systems in the same manner. Although the program would nly infect Sun Microsystems Sun 3 systems and VAX computers running variants of 4 BSD Unix the program spread quickly as did the confusion and consternation of system administrators and users .

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