Helpful Seminar Easy topics

1. Seminar On Computer
Worms, Viruses Trojans & It’s Prevention
Submitted to:
Dr. S.R.Sirsat Sir
(Head of department)
(Department of Computer Science)
Submitted By:
Pratimesh Pathak
B.Sc II year

2. preface
I have made this presentation file on the topic COMPUTER
WORMS AND VIRUSES and it’s prevention. I have tried my best to
present all the details and difference Between Computer worms and
viruses. In the beginning I have tried to give you general information on
this topic.
I express my sincere gratitude to Dr.S.R.Sirsat sir
Prof. S.S.Wawre mam & Prof. Umesh Gadhve sir who assisting me
throughout the preparation of this topic. I thank him for providing me the
confidence performing act and most importantly the track of the topic
whenever I needed it.

3. Content:
• Introduction.
• Life Cycle Of Computer Viruses
• Type of worms.
• Types of viruses.
• Types of Trojans.
• Difference between Computer worms Viruses and Trojans.
• Symptoms of worms.
• Symptoms of viruses.
• Symptoms of Trojans.
• Top 5 sources.
• Prevention and cure.
• Types of Antivirus.
• Types of Antivirus Product.
• How Antivirus Software Works.
• Norton Antivirus, MacAfee Virus Scan, Kaspersky Anti-
virus.
• Conclusion.

4. Introduction
VIRUSES: A computer virus is a program that reproduces its own code by
attaching itself to other executable files in such a way that the virus code is executed
when the infected executable file is executed.
WORMS: A computer worm is a standalone malware computer
programs that replicates itself in order to spread to other computers.
It uses a computer network spread itself, attack on security failures on the target
computer to access it.
Trojan: A Computer Trojans is a harmful piece of software that looks legal.
Users are typically tricked into loading and executing it on their systems.
After it is activated, it can achieve any number of attacks on the host, from
irritating the user to damaging the host.

5. A typical Life cycle of computer virus

6. Types Of Worms
Email
Worm
Internet
Worm
Instant
Messaging
Worm
File Sharing
Network
Worm

7. Types Of Viruses
Macro
Viruses
Overwrite
Viruses
Direct Action
Viruses
Multipartite
Viruses

8. Types Of Trojans
Exploit: Backdoor: Rootkit: Ransom:Spy:

9. Differences Computer Viruses Computer Worms Trojans
Definition The virus is the program
code that attaches itself to
application program and
when application program
run it runs along with it
The worm is code that
replicate itself in order
to consume resources
to bring it down.
A Trojan is another type of malware
which is a harmful piece of software that
looks legitimate
How it infect
a computer
It inserts itself into a file or
executable program
It exploits a weakness
in an application.
A Trojans Horse is similar to viruses and
worms but it doesn’t spread or reproduce.
How can it
spread?
It has to rely on users
transferring infected
files/programs to other
computer systems
It has to rely on users
transferring infected
files/programs to other
computer systems
Its look similar to software but will actually
damage once installed or run it. When
installed its result is varied.
Does it infect
files?
Yes, it deletes or modifies
files. Sometimes a virus
also changes the location
of files.
Usually not. Worms
usually only
monopolize the CPU
and memory.
Trojans can cause servers damage such
as deleting files.
whose speed
is more?
virus is slower than worm worm is faster than
virus. E.g. The code
red worm affected 3
lack PCs in just 14
Hrs.
Once a computer is infected with a Trojan
virus, the malware perform destructive
harm on the target computer.

10. Symptoms : Worms

11. Symptoms: Viruses

12. Symptoms : Trojans

14.  Regularly update the program.
 Open E-mail attachment files only if you are expecting the attachment
files, or the sender is known and has confirmed sending the files.
 Try to avoid downloading and installing the illegal software from the
Internet.
 Install only registered copies of software the system.
 Install an Antivirus Software.

15. • There are types of antivirus software for
different computers.
1. Some are designed for personal computers.
2.Some are for servers and other for enterprises
• There are mainly two types of antivirus
software:
Specific & Generic.

16.  Depending on the installation method of the anti-virus
these can be in the following forms:
On-Access, On demand, and hardware.
 Depending on the way they fix viruses these can be in
the following forms:
Anti-virus, Anti-spyware and Anti-span application.

17. Source System
Interception
Disinfection
Destination System
Alert
How Anti-Virus Software Works:-

18. Some Anti-virus Software
1.Norton Anti-virus:
Norton Antivirus Is a product of Symantec cooperation
founded in 1982.
Norton checks following program:
I. Boot records.
II. Programs( all the time you used them)
III. All local Hard Disk.
IV. Files download from internet.
V. Usb (when in use)

19. MacAfee is an antivirus software and computer security
company head quartered in Santa Clara, California.
It markets MacAfee virus scan and related security products
and services, including the intercept and found stone brands.
2.MaCFee Virus Scan

20. 3.Kaspersky Anti-virus
• Kaspersky is product of Kaspersky lab.
• A Russian computer security company.
• Co-founded by Natalya Kaspersky antivirus, do
the following thing.
• Invite virus scan by opening the Kaspersky
Antivirus window.

21. Conclusion.
 If virus And Worms Attack on our Computer it disturb
our System, corrupts data, Some time deletes data and
make harm to our computer.
 Hence, we need to keep safe our computer or any
device by using various antivirus software's.
 Do smart surfing on the Internet
 For better and Safe computation Anti-Virus software
should be installed and be helpful for global network
system.