This document summarizes a seminar on cyber crime technology presented by Rahul js. It first defines cyber crime as unlawful acts involving computers as tools or targets under the Information Technology Act. It then outlines three major categories of cyber crimes: against persons, property, and government. Specific cyber crimes discussed include cyber harassment, computer vandalism, and cyber terrorism. The document also examines botnet and phishing technologies used to enable cyber crimes, describing botnet lifecycles and how phishing scams acquire sensitive information from users. Prevention methods for both botnet infections and phishing are proposed.

1. SEMINAR
ON
CYBER CRIME
TECHNOLOGY
Submitted by
Rahul js
S5 chm
Rollno:32
Gptc ndd

2. Introduction
Definition
Categories of cyber crime

3. Defining Cyber Crime
It’s an unlawful act wherein the computer is
either a tool or a target or both.
Acts that are punishable by the Information
Technology Act.
Cyber space is a virtual space that has become
as important as real space for business, politics,
and communities .

4. INTRODUCTION
The internet is growing rapidly. It has given rise
to new opportunities in every field we can think
of – be it entertainment, business, sports or
education.
There are two sides to a coin. Internet also has its
own disadvantages. One of the major
disadvantages is Cyber crime – illegal activity
committed on the internet.

5. CATEGORIES OF CYBER
CRIME:
Cyber crimes can be basically divided
into 3 major categories:
1. Cyber crimes against persons.
2. Cyber crimes against property.
3. Cyber crimes against government

6. SECOND CATEGORY
These crimes include computer vandalism
(destruction of others' property), transmission
of harmful programs, unauthorized trespassing
through cyber space, unauthorized possession
of computer information.

7. THIRD CATEGORY
Cyber terrorism is one distinct kind of crime in
this category.
The growth of internet has shown that the
medium of Cyberspace is being used by
individuals and groups to threaten the
international governments as also to terrorize
the citizens of a country.

8. FIRST CATEGORY
Cyber harassment is a distinct Cyber
crime. Various kinds of harassment can
and do occur in cyberspace, or through
the use of cyberspace. Harassment can be
racial, religious, or other.

9. Types Of Cyber Crime
Modification of a
conventional crime
by using computers.
Frequently Used
Cyber Crimes..

10. Modification of a conventional
crime by using computers.
Financial crimes
Sale of illegal articles
Online gambling
BACK

11. Frequently Used Cyber
Crimes.
Unauthorized access to computer systems or
networks
Theft of information contained in electronic
form
Denial of Service attack
BACK

12. CYBER CRIME
TECHNOLOGY

13.  BOTNET TECHNOLOGY
 PHISHING TECHNOLOGY

14. BOTNET

15. OUTLINE
Introduction to Botnet
 Botnet Life-cycle
Botnet Detection
 Preventing Botnet Infection
Conclusion

16. INTRODUCTION
 A Botnet is a network of compromised
computers underthe control of a remote
attacker
 controllerof a botnet is able to direct the
activities of these compromised computers
 Botnet Terminology
 Bot Herder(Bot Master)
 Bot
 Bot Client
 IRC Server
 Command and Control Channel (C&C)

17. INTRODUCTION
 A Botnet is a network of compromised
computers underthe control of a remote
attacker
 controllerof a botnet is able to direct the
activities of these compromised computers
 Botnet Terminology
 Bot Herder(Bot Master)
 Bot
 Bot Client
 IRC Server
 Command and Control Channel (C&C)

18. INTRODUCTION TO BOTNET(TERMINOLOGY)
IRC Channel
IRC Server
Code Server
IRC Channel
C&C Traffic
Updates
Victi
m
Attack
Bot Master

19. BOTNET LIFE-CYCLE

20. BOTNET LIFE-CYCLE

21. BOTNET LIFE-CYCLE

22. BOTNET LIFE-CYCLE

23. BOTNET DETECTION:TRAFFIC
MONITORING
 Signature based: Detection of known botnets
 Anomaly based: Detect botnet using
following anomalies
 High network latency
 High volume of traffic
 Traffic on unusual port
 Unusual system behaviour
 DNS based: Analysis of DNS traffic
generated by botnets

24. PREVENTING BOTNET
INFECTIONS
Use a Firewall
 Use Antivirus (AV) software
 Deploy an Intrusion Prevention System (IPS)
 Define a Security Policy and
 Share Policies with yourusers systematically

25. CONCLUSION
 Botnets pose a significant and growing threat
against cybersecurity
 It provides key platform formany cybercrimes
(DDOS)
 As network security has become integral part of
ourlife and botnets have become the most
serious threat to it
 It is very important to detect botnet attack and
find the solution forit

27. Phishing
Phishing is a way of fraudulently acquiring sensitive
information using social engineering and technical
subterfuge.
It tries to trick users with official-looking messages
Credit card
Bank account
eBay
Paypal
Some phishing e-mails also
contain malicious or unwanted
software that can track your
activities or slow your computer

28. The purpose of a phishing message is to acquire sensitive
information about a user. For doing so the message needs
to deceive the intended recipient.
So it doesn’t contains any useful information and hence
falls under the category of spam.
A spam message tries to sell a product or service, whereas
phishing message needs to look like it is from a legitimate
organization.
Techniques applied to spam message cant be applied
naively to phishing messages.

29. HOW TO PREVENT
1) Detect and block the phishing Web sites in
time
2) Enhance the security of the web sites
3) Block the phishing e-mails by various
spam filters
4) Install online anti-phishing software in
user’s computers

31. How to avoid Phishing
DON’T CLICK THE LINK
Type the site name in your browser (such as
www.paypal.com)
Never send sensitive account information by e-
mail
Account numbers, SSN, passwords
Never give any password out to anyone
Verify any person who contacts you (phone or
email).
If someone calls you on a sensitive topic, thank them,
hang up and call them back using a number that you
know is correct, like from your credit card or statement.