The morris internet worm( Morris因特网蠕虫) rsh attack finger attack grappling sendmail attack hook request for worm worm sent worm worm target system infected system Applied Operating System Concepts 196 Silberschatz, Galvin, and Gagne @199919.6 Silberschatz, Galvin, and Gagne ©1999 Applied Operating System Concepts The Morris Internet Worm（Morris因特网蠕虫）