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Lecture 17 Introduction to Hacking WHAT IS NETWORK SECURITY? • Security is much larger than just packets, firewalls, and hackers. Security includes: – – – – – Policies and procedures Liabilities and laws Human behavior patterns Corporate security programs and implementation Technical aspects- firewalls, intrusion detection systems, proxies, encryption, antivirus software, hacks, cracks, and attacks • Understanding hacking tools and how attacks are carried out is only one piece of the puzzle. 2 Hacking  THE PROCESS OF ATTEMPTING TO GAIN OR SUCCESSFULLY GAINING,UNOTHORIZED ACCESS TO COMPUTER RESOURCES FOR THE PURPOSE OF HELP OR SECURE SYSTEM IS CALLED HACKING HISTORY OF HACKING 1966 – ROBERT MORRIS INTRODUCES THE CONCEPT OF SAFE HACKING. 1969 – DEVELOPMENT IN THE FIELD OF HACKING. 1990 – ELECTRONIC FRONTIER FOUNDATION WAS FOUNDED. 1995 – MARK ANDREESSON & ERIC RELEASE MOSAIC. WHO IS HACKER?  HACKER IS NOT CYBER CRIMINAL BUT HE IS THE VERY INTELLIGENT PERSON WHO USES HIS KNOWLEDGE IN CONSTRUCTIVE MANNER TO SECURE SYSTEM & NEVER DAMAGE DATA  HE KNOWS ALL ABOUT THE OPERATING SYSTEM & DIFFERENT HOLES IN THE SYSTEM WHO IS CRACKER?  PERSON WHO ENTER INTO OTHER’S SYSTEM AND VIOLET THE SYSTEM,DAMAGE THE DATA,CREATE HAVOC IS CALLED CRACKER  CRACKER IS CYBER CRIMINAL  THEY CAN BE EASILY IDENTIFIED BECAUSE THEIR ACTIONS ARE MALICIOUS WHY DO CRACKERS EXIST?  CRACKERS EXIST BECAUSE HUMAN NATURE IS JUST SO,FREQUENTLY DRIVEN BY TO DESTROY INSTEAD OF CREATE  THEY ARE USED FOR DIFFERENT PURPOSES LIKE FOR PROFIT,SOME COMPANY USE THEM FOR DISABLING THE COMPITITOR COMPANY, FOR CRACKING CREDIT CARD NUMBER DIFFERENCE BETWEEN HACKER & CRACKER  HACKER’S PROGRAMS TO CHECK INTIGRITY OF OTHER PROGRAMS.THUS WHEN HACKERS CREATE PROGRAM IT AUTOMATICALLY CHECKS REMOTE MACHINE SECURITY STRUCTURE  THEY ALWAYS DO CONTRUCTIVE WORK  CRACKERS RARELY MAKE THEIR OWN PROGRAM .INSTEAD ,THEY STEAL TOOL,PROGRAMS FROM OTHERS  CRACKERS CREATES NOTHING & DESTROY MUCH WHICH OPERATING SYSTEM HACKER USE SUN UNIX MICROSOFT SUN HACKERS Use EITHER SOLARIC X86 OR SCO AS A PLATFORM. THIS IS BECAUSE THESE PRODUCTS ARE LICENSED WARE & THEY CAN EASILY BE OBTAINED.