Title: Computer Break-ins: A Case Study Authors: Leendert van
Doorn   
File name:pubdocmiscLeendert_van_Doorn-Computer_Brakins.ps.Z 
File size:42678 bytes 

Abstract: This paper describes the modus operandi of
hackers based on multiple hacking attempts that occurred during
this year at some department computers. Special attention is paid
to the methods they use to break into computer systems and what
they do once they are in.