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Ethical Hacking
Submitted By: Submitted To:
Ms. Kanchan Nahar
Name-Sahil Hussain Assistant professor
Roll No.-1324458
BCA-2nd
Semester

Content
• Introduction
• Ethical Hacking
• Who are Hackers
• Why do Hackers hack
• Types of Hackers
• Hacking Process
• Why do We need Ethical Hacking
• Required Skills of an Ethical Hacker
• What do hackers do after Hacking?
• Advantages
• Disadvantages
• Future Enhancements

Introduction
 Ethical hacking also known as
penetration testing or white-hat hacking,
involves the same tools, tricks ,and
Techniques that hackers use ,but with one
major difference that Ethical hacking is
legal.

Ethical Hacking
o Independent computer security Professionals into the
computer systems.
o Neither damage the target systems nor steal information.
o Evaluate target systems security
and report back to owners about
the bugs found.

Who are Hackers ?
• A person who enjoys learning details
of a programming language or system.
• A person who enjoys actually doing the
programming rather than just theorizing about
it.
• A person capable of appreciating someone
else’s hacking.
• A person who picks up programming quickly.
• A person who is an expert at a particular
programming language or system.

Why do hackers hack ?
 Just for fun.
 Show off.
 Hack other systems secretly.
 Notify many people their thought.
 Steal important information.
 Destroy enemy’s computer network
during the war.

Ethical Hackers but not Criminal Hackers
o Completely trustworthy.
o Strong programming and computer
networking skills.
o Learn about the system and trying
to find its weaknesses.
o Techniques of Criminal hackers-
Detection-Prevention.

Types of Hackers
o Black Hat Hacker
o White Hat Hacker
o Grey Hat Hacker

Black-Hat Hacker
• A black hat hackers or crackers are
individuals with extra ordinary
computing skills, resorting to
malicious or destructive activities.
• That is black hat hackers use their
knowledge and skill for their own
personal gains probably by hurting
others.

White-Hat Hacker
• White hat hackers are those
individuals professing hacker
skills and using them for
defensive purposes.
• This means that the white hat
hackers use their knowledge and
skill for the good of others and
for the common good.

Grey-Hat Hackers
• These are individuals who work
both offensively and defensively
at various times.
• We cannot predict their behavior.
• Sometimes they use their skills
for the common good while in
some other times he uses them for
their personal gains.

What should do after hacked?
 Shutdown or turn off the system
 Restore the system with the backup
or reinstall all programs
 Connect the system to the network
 It can be good to call the police

Hacking Process
• Foot Printing :Gathering information.
• Scanning : Analyzing networks and systems.
• Gaining Access :Entering a system.
• Maintaining Access :Keeping control for a long
time.

Foot Printing
• Who is lookup :Retrieves domain ownership and
registration details.
• NS lookup :Finds the name servers (DNS) for a domain.
• IP lookup :Checks IP address details like location and ISP.

Scanning
• Port Scanning :Identifying open ports in a network.
• Network Scanning :Finding active devices and
their details in a network.
• Finger Printing : Identifying and gathering details
about a system or device.
• Fire Walking :Gathering information about networks
and servers behind a firewall.

Gaining Access
• Password Attacks :Techniques to steal or crack
passwords.
• Social Engineering :Deceiving people to obtain
sensitive information.
• Viruses :Malicious programs that harm systems.

Maintaining Access
• OS Back Doors :Hidden paths that allow
unauthorized access.
• Trojans : Malicious software disguised as legitimate
programs.
• Clears Tracks : Erasing evidence of hacking
activities.

Why do you need Ethical hacking
Protection from possible External Attacks

Required Skills of an Ethical Hacker
• Microsoft : skills in operation, configuration and management.
• Linux : knowledge of Linux/Unix; security setting, configuration,
and services.
• Firewalls : configurations, and operation of intrusion detection
systems.

Required Skills of an Ethical Hacker….
• Routers : knowledge of routers, routing protocols, and access
control lists
• Mainframes : knowledge of mainframes
• Network Protocols : TCP/IP; how they function and can be
manipulated.
• Project Management : leading, planning, organizing, and
controlling a penetration testing team.

What do hackers do after hacking?...
• Patch Security hole
 The other hackers can’t intrude
• Clear logs and hide themselves
• Install rootkit ( backdoor )
 The hacker who hacked the system can use the
system later
 It contains trojan virus, and so on
• Install irc related program
 identd, irc, bitchx, eggdrop, bnc

What do hackers do after hacking?
• Install scanner program
 m scan, s scan, n map
• Install exploit program
• Install denial of service program
• Use all of installed programs silently

Advantages
• To catch a thief you have to think like a thief.
• Helps in closing the open holes in the system network.
• Provides security to banking and financial establishments.
• Prevents website defacements.
• An evolving technique.

Disadvantages
• All depends upon the trustworthiness of the ethical hacker.
• Hiring professionals is expensive.

Future Enhancements
• As it an evolving branch the scope of enhancement in
technology is immense.
• No ethical hacker can ensure the system security by using the
same technique repeatedly.
• More enhanced software’s should be used for optimum
protection.

References
• www.google.com
• www.wikipedia.org
• www.tutorialspoint.com

Thank You…
Any Questions…?

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