In the computer security context, a hacker is someone who seeks and exploits weaknesses in a computer system or computer network.

1. HACKING
Presented by: Harendra Singh
MCA

2. INTRODUCTION
 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
 HACKING IS TECHNIQUE IN WHICH ANY ONE CAN
ACESS ANY ONE’S COMPUTER WITHOUT HIS
PERMISSION
 THE PERSON WHO IS DOING THIS TYPE OF WORK IS
CALLED HACKER

3. 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.

4. WHO IS HACKER?
 HACKER IS NOT CYBER CRIMINAL BUT HE IS THE
VERY INTELLIGENT PERSON WHO IS USE HIS
KNOWLEDGE IN CONSTRUCTIVE MANNER TO
SECURE SYSTEM & NEVER DAMAGE DATA
 HE KNOW ALL ABOUT THE OPERATING SYSTEM &
DIFFERENT HOLES IN THE SYSTEM

5. 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

6. WHY DO CRACKERS EXIST?
 CRACKERS ARE EXIST BECAUSE HUMAN NATURE IS
JUST SO,FREQUENTLY DRIVEN BY TO DESTROY
INSTEAD OF CREAT
 THEY ARE USE FOR DIFFERENT PURPOSE LIKE FOR
PROFIT,SOME COMPANY USE THEM FOR DISABLE
THE COMPITITOR COMPANY,FOR CRACKS CREDIT
CARD NUMBER

7. DIFFERENCE BETWEEN HACKER &
CRACKER
HACKER
CRACKER
 HACKER’S PROGRAMS TO
CHECK INTIGRITY OF
OTHER PROGRAMS.THUS
WHEN HACKER CREATE
PROGRAM IT
AUTOMATICALLY CHECK
REMOTE MACHINE
SECURITY STRUCTURE
 CRACKERS RARELY MAKE
THEIR OWN PROGRAM
.INSTEAD ,THEY STEAL
TOOL,PROGRAMS FROM
OTHERS
 THEY ALWAYS DO
CONTRUCTIVE WORK
 CRACKERS CREATES
NOTHING & DESTROY
MUCH

8. WHICH OPERATING SYSTEM HACKER
USE ?
 SUN
 UNIX
 MICROSOFT

9. SUN
 HACKERS USING EITHER SOLARIC X86 OR SCO
AS A PLATFORM.
 THIS IS BECAUSE THESE PRODUCTS ARE
LICENSE WARE & THEY CAN EASILY BE
OBTAINED.

10. UNIX
 POPULAR PLATFORM BECAUSE THEY
REQUIRED A LOW OVERHEAD.
 WE CAN RUN LINUX ON A PALTRAY 386 AND
GAIN GOOD PERFORMANCE.
 THIS IS REASONABLE.

11. MICROSOFT
 THIS SUPPORTS MANY SECURITY TOOLS THAT
CAN BE USED TO ATTACK REMOTE MACHINE.
 IT HAS ADVANCED TOOLS FOR NETWORKING
AS WELL.

12. WHY DO PEOPLE HACK ?
 JUST FOR FUN.
 SHOW OF THEIR KNOWLEDGE.
 HACK OTHER SYSTEM SECRETLY.
 DESTROY ENEMY’S COMPUTER NETWORK
DURING THE WAR.
 FOR PROFIT PEOPLE PAYS A CRACKER.
 CRACK FOR SAKE OF CURIOCITY.

13. THE PSYCOLOGY OF HACKERS
 ALL INFORMATION SHOULD BE FREE.
 ACCESS TO COMPUTER SHOULD BE
UNLIMITED AND FREE.
 IT CAN CHANGE LIFR FOR BETTER.
 IT CAN CREATE BEAUTY ON COMPUTER.

14. TYPES OF HACKING
 THERE ARE MANY TYPES OF HACKING
LIKE
• PASSWORD HACKING
• SOFTWARE HACKING
• NET HACKING

15. PASSWORD HACKING
 TWO TYPES
1. BRUTE FORCE
• IN THAT CASE HACKERS TRY OUT ALL THE
COMBINATION OF ALL KEYBOARD LETTERS .IT HAS
GRATER SUCCESS BUT IT TAKES LONG TIME
2. DICTIONARY BASED
• IN THAT THEY ARE USE PREDEFINE PASSWORD.IT IS
UNSUCCESSFUL METHOD

16. SOFTWARE HACKING
 IN THAT HACKERS CHANGES THE LOOK &
EXCUTION WAY OF THAT SOFTWARE
 CHANG THE DEMO VERSION INTO FULL
VERSION BY DECODE THE SOURCE CODE

17. IP ADDRESS
 IP ADDRESS IS THE ADDRESS OF YOUR
COMPUTER IN THE INTERNET
 IT IS UNIQ
 LIKE 192.168.23.45

18. PORT
 IT IS NOT PHYSICAL PORT BUT IT IS LOGICAL PORT IN YOUR
COMPUTER
 IT IS JUST LIKE HOLE ONTO THE SYSTEM.THROUGH HACKER
CAN ENTER
 THERE ARE THOUSANDS OF PORTS INTO COMPUTER
 THE PETICULAR SERVICE IS RUNNING ON PERTICULAR PORT
 LIKE
PORT 21 : FTP
PORT 23 : TELNET
PORT 80 : HTTP
PORT 25 : MAIL

19. HACKING TOOLS
THERE ARE MANY TOOLS ARE AVILABLE:
•
•
•
•
SCANNERS
TELNET
FTP
LAN WATCH

20. SCANNERS
 IT IS NOT A PHOTO SCANNER
 SCANNER IS PROGRAM THAT AUTOMATICALLY
DETECTS SECURITY WEAKNESS IN REMOTE HOST
 PORT SCANNERS ARE USE IN HACKING
 PORT SCANNER CAN GIVE THE WHOLE LIST OF OPEN
PORT ON THAT SYSTEM AND WHICH SERVICE IS
RUNNING ON THAT
 IT CAN USE ALMOST ALL OPERATING SYSTEM
 EX. SATAN,NMAP

21. TELNET
 TELNET IS ALTIMATE HACKING TOOL
 IT IS TERMINAL EMULATION PROGRAM THAT
ALLOW US TO CONNECT TO REMOTE SYSTEM
 YOU HAVE TO FOLLOW THIS STEP TO USE
TELNET
C:WINDOWSTELNET [IP ADDRESS] PORT

22. FTP
 FTP IS ONE TYPE OF PROTOCOL BUT SOME TIME IT
IS USE AS HACKING TOOL
 PORT 21 FOR THE FTP
 FOR CONNECTING FTP WE NEED SOME FTP S/W
KNOWN AS FTP CLIENT
 FOR CONNECTING FTP SERVER YOU HAVE TO
HAMMERING THAT SERVER
 COMMAND:
C:WINDOWSFTP [IP ADDRESS]:PORT

23. LAN WATCH
 LAN WATCH IS A SOFTWARE WHICH NOT
ATTACK AND NOT DAMAGE REMOTE
NETWORK
 BUT IT KEEP WATCH ON THE REMOTE
NETWORK & GIVE ALL THE INFORMATION
WHAT IS GOING ON THAT NETWORK

24. ATTACKS
THERE ARE MANY TYPES OF ATTACKS:
•
•
•
•
•
•
SPOOFING ATTACK
TELNET BASED ATTACK
DOS (Daniel of service) ATTACK
PING OF DEATH
DISTRIBUTED DOS ATTACK
MAILBOMBS

25. NEED FOR SECURITY
SOME EXELLENT SOFTWARE CAN PROVIDE YOU
BEST SECURITY
LIKE:
• TROJAN
• FIREWALL

26. TROJAN
 WINDOWS TROJANS ARE SMALL ASPECT OF
WINDOWS SECURUTY
 TROJAN IS UNOTHORIZED PROGRAM
CONTAINED WITHIN A LEGIMATE PROGRAM
 THIS PROGRAM PERFORMS FUNCTION
UNKNOWN BY USER

27. FIREWALL
FIREWALL IS ANY DEVICE USED TO PREVENT
OUTSIDERS FROM GAINING ACCESS TO YOUR
NETWORK
TYPES OF FIREWALLS:
• PACKET FILTER
• APPLICATION PROXY
• PACKET INSPECTION

28. CONCLUSION