Transcript Slide 1

Viruses, Antiviruses & Spyware
Kimberly Bolanos
Ayesha Fatima
Asfiya Khatoon
A Brief History of
Computer Viruses,
Bugs, & Worms
Kimberly L. Bolanos
The First "Computer Bug“
In 1947 Rear Admiral Grace
Murray Hopper discovers a
moth trapped between
relays in a Navy computer.
She calls it a "bug," a term
used since the late 19th
century to refer to problems
with electrical devices.
Differences between a
virus and a worm
Need a host file.
Make their presence known by presenting text, video, and audio messages.
Typically take up computer memory used by legitimate programs, causing erratic
behavior leading to system crashes.
Program that replicate itself from system to system without the use of a host file.
They generally exist inside of other files, often Word or Excel documents.
Worm releases a document that already has the "worm" macro inside the document.
1st Commercial Computer Virus
Elk Cloner
1st Apple Virus
Apple II
Fred Cohen
Defined Computer Virus
1s t PC Widespread Boot Sector Virus
1st macro virus that spread
through Microsoft Word
Fastest spreading virus
Steals your information and sends it off to the
First “Do – It – Yourself” virus toolkit.
Multi-dimensional attack
The newest bounty hunters.
The first, the fastest, the most ferocious.
It all started as a popular game!
Think of an
1975 by John Walker
Animal was a computer program that
would try to guess the animal you
were thinking of by asking series of
twenty questions. While you were
answering the questions the virus
Pervade was quietly running in the
Early Cloning
Created in 1982 by Rich Skrenta, Elk
Cloner was the first computer virus to
affect personal computers, namely the
Apple II.
This was the first "boot sector" virus.
Who: Fred Cohen
What: Coins the term
"computer virus"
When: 1983
Where: University of
Southern California
1986 One of the first PC viruses ever created, "The Brain," is
released by programmers in Pakistan.
In August 1995,
The worm circled the globe in only a month
and until September 1998 was listed as one
of the most prevalent viruses reported.
1999 The infamous "Melissa"
virus, infects thousands of
computers with alarming
speed, causing an estimated
$80 million in damage and
prompting record sales of
anti-virus products.
Melissa author, David L.
Smith, 33, is sentenced
to 20 months in federal
The "I Love You" virus
infects millions of computers
virtually overnight, using a
method similar to the
Melissa virus. But this virus
also sends the usernames
and passwords stored on
infected computers back to
the virus's author.
Feeling the
Onel de Guzman
and his sister,
Irene de Guzman.
The "Anna Kournikova"
virus, promised digital
pictures of the young
tennis star.
What you got was the
chance to send the virus
to EVERYONE in your
Outlook address book!
On September 18, 2001, the
"Nimda" virus infects
hundreds of thousands of
computers around the world.
At the time, with up to four
methods of infecting
systems and replicating
itself, Nimda appeared to be
the most sophisticated, yet
troublesome, virus of its
admin = nimda
The "Anna Kournikova"
virus, promised digital
pictures of the young
tennis star.
What you got was the
chance to send the virus
to EVERYONE in your
Outlook address book!
Is Bill Gates the Millennium's New Bounty Hunter???
In 2003 Microsoft announces a $5M
reward program to help catch virus
This presentation would not have been possible without the kindness and
generosity of the following persons and/or Websites.
End of Section
Ayesha Fatima
Company name
What is Antivirus
Antivirus software is a class of program that searches a
hard drive and floppy disk for any known or potential viruses
Antivirus program runs in the Random Accesses Memory of a computer
Anti-virus software typically uses two different techniques to accomplish this:
•Examining files to look for known viruses by means of a virus dictionary
•Identifying suspicious behavior from any computer program which might indicate
Most commercial anti-virus software uses both of these approaches, with an emphasis
on the virus dictionary approach.
How Antivirus Software Works:
Source System
Destination System
Types of Antivirus software:
AVG : AVG Free provides you with basic antivirus and antispyware
protection for Windows and is compatible with Windows XP and
Norton Antivirus: Well known antivirus software, use for protection
against spyware, worms and viruses.
MacFee Virus Scan: It is a leading brand name when it comes to
antivirus software. It offers easy and quick download
The shield Deluxe: It is simple to use and is vista compatible, offers
automatic updates and weekly virus scans. It cost about $29.99.
CA Antivirus: This is user friendly updates and scans are available
at a click of mouse. Automatic file scanning, automatic email
scanning, automatic live updates, scheduled and on-demand
hard drive scanning, archive scanning, interactive virus detection
messages, threat outbreak warning system, file exclusion lists,
file quarantine
Bit Defender: Easy to install and download processes, Real-time
protection from spyware, malware and viruses, automatic hourly
updates, Minimal use of system resources, Anti-phishing tools.
Kaspersky Antivirus: Kaspersky includes important anti-virus software
functions such as real-time email, file and web scanning, as well as the
ability to remove spyware
NOD32: The NOD32 anti-virus software by ESET is a novel virus
program that provides real-time protection against worms, Trojans,
spyware, malware, phishing and hackers
Panda Antivirus: Download and install process is smooth and fast.
Panda's Antivirus software comes with an virus and spyware
protection. Panda allows you to block, delete, clean, and quarantine
infected files and does not slow your pc down during virus scans which
is helpful to those constantly on your PC
Trend Micro: It is anti-virus plus Anti-spyware now gives its customers
the tools it needs to battle malicious spyware, amongst things like
trojans, hackers, worms, and adware.
History of Antivirus
Back in 1988 viruses grabbed the mass media attention and some of the best researchers in
the antivirus world begun their work before 1989. So 1988 was the year in which antivirus
comerciants emerged
By 1990 the following antivirus products were available on the market
• AntiVirus Plus (Iris)
• Certus (Certus International)
• Data Physician (Digital
• Turbo Antivirus (Carmel)
• ThunderByte (ESaSS)
• Vaccine (Sophos)
• Vaccine (World Wide Data)
• Virex-PC (Microcom)
• Virucide (McAfee's Pro-Scan)
• Virusafe (Elia Shim)
• ViruScan (McAfee)
• Prot (Frisk Software)
• V-Analyst (BRM)
• Dr. Solomon's Anti-Virus
Toolkit (S&S)
• Vet (Cybec)
• VirusBuster (Hunix)
• Virscan (IBM)
• Vi-Spy (RG Software
Asfiya Khatoon
• In order to understand antispyware, we need to
understand spyware first.
• What is Spyware?
– Spyware is a technology that aids in gathering
information about a person or organization
without their knowledge .
What is Spyware? (contd.)
• Spyware is programming that is put in someone's
computer to secretly gather information about the user
and relay it to advertisers or other interested parties.
• Spyware can get in a computer as a software virus or as
the result of installing a new program.
How does it get installed on user’s PC?
• Often installed without the user's
consent, as a
– drive by download, or
– as a result of clicking some option
in a deceptive pop up window.
Similarity between spyware & cookie
cookie is well-known for storing information about an
Internet user on their own computer. If a Website
stores information about you in a cookie that you don't
know about, that cookie can be considered a form of
What spyware developers say?
While according to the privacy policies of the
companies, there will be no sensitive or identifying
data collected from your system and you shall
remain anonymous
It still remains the fact, that the internet user have a
"live" server sitting on his PC that is sending
information about him and his surfing habits to a
remote location.
Effects of Spyware
• Excessive pop-ups.
• Slow performance of user’s
• Misuse of data: your privacy and
personal information are at risk
• Security threats caused by spyware
and other unwanted software
How to remove or block spyware?
• Its very simple. Use Anti spyware software.
• Identifies, Prevents and safely eliminates potentially
unwanted and malicious programs.
• There are a number of anti spyware softwares that are
available on the Internet.
Anti Spyware
• Many programmers and some commercial firms have released
products designed to remove or block spyware.
• Programs such as Ad-aware SE , Spybot –Search & Destroy rapidly
gained popularity as effective tools to remove, and in some cases
intercept, spyware programs.
• More recently Microsoft acquired the Windows AntiSpyware
beta and releasing it as a free download for Genuine Windows XP
and Windows 2003 users. Later, Microsoft renamed the beta
software to Windows Defender , and it was released as a free
download and is included as standard with Windows Vista.
Different Anti spyware softwares
Other well-known commercial anti-spyware products include:
– Webroot software’s Spy Sweeper.
– PC Tools’ Spyware Doctor.
– Drive Sentry.
– SUPER Anti Spyware.
– Sunbelt Softwares’ Counterspy.
– Trend Micro’s Hijack This.
Anti Spyware
• Major anti-virus firms such as Symantec, McAfee and
Sophos have come later to the table, adding antispyware features to their existing anti-virus products.
Web sites:
Text Books:
Blocking spam and spyware for Dummies by Peter H. Gregory
and Mike Simon .
PC Magazine Fighting Spyware, Viruses and Malware by Ed
Securing your information in an insecure world: what you must
know about hackers and identity thieves by Hassan Osman.
Disclaimer and Copyright Information
While most of it is the work of this Author, some of the
information or short excerpts are or might be from (a)
the Public Domain, and/or (b) compilation of
information from "other sources available on the
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Internet“. Therefore where applicable, ALL respective
credits, and respective benefits of Copyright for such
works remain with the respective original authors
and/or Owners of applicable Copyrights.
Copyright © 2008 by
Kimberly L. Bolanos & Ayesha Fatima & Asfiya Khatoon
All rights reserved.
The End