H.Shravan Kumar
KReSIT,
I.I.T. Bombay.

Guide: Prof. Bernard Menezes

Abstract—
One of the most high profie threats to information integrity is the computer virus. In this paper, I am presenting what are viruses, worms, and Trojan horses and their differences, different strategies of virus spreading and case studies of Slammer and Blaster worms.


INTRODUCTION
The internet consists of hundreds of millions of computers distributed around the world. Millions of people use the internet daily, taking full adv ....etc

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Laboratory testing of a novel, permanent nano-coating, developed in collaboration by researchers at North Carolina State University College of Textiles and Emory University School of Medicine, has been shown to kill or inactivate most viruses and bacteria when exposed to visible light. Early tes ....etc

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Computer viruses are mysterious and grab our attention. On the one hand, viruses show us how vulnerable we are. A properly engineered virus can have an amazing effect on the worldwide Internet. On the other hand, they show how sophisticated and interconnected human beings have become. ....etc

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Intruders
• Three classes of intruders (hackers or crackers):
– Masquerader
– Misfeasor
– Clandestine user
Intrusion Techniques
• System maintain a file that associates a password with each authorized user.
• Password file can be protected with:
– One-way encryption
– Access Control
• Techniques for guessing passwords:
– Try default passwords.
– Try all short words, 1 to 3 characters long.
– Try all the words in an electronic dictionary(60,000).
– Collect information ....etc

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COMPUTER VIRUSES AND ANTIVIRUSES : AN INSIGHT




TYPES OF INFECTANTS:


VIRUSES: Small piece of software that piggybacks on real programs
WORMS: Computer program that copies itself from machine to machine
E-MAIL VIRUSES :Moves around in e-mail messages
TROJAN HORSES: Claims to do one thing, but does something else


VIRUS: WORKING PHASES

INFECTION PHASE: The file is infected
ATTACK PHASE: The infected file is run, and virus shows its a ....etc

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Computer viruses are mysterious and grab our attention. On the one hand, viruses show us how vulnerable we are. A properly engineered virus can have an amazing effect on the worldwide Internet. On the other hand, they show how sophisticated and interconnected human beings have become.


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Downlaod

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A computer virus is a self-replicating program containing code that explicitly copies itself and that can infect other programs by modifying them or their environment such that a call to an infected program implies a call to a possibly evolved copy of the virus.

These software pranks are very serious; they are spreading faster than they are being stopped, and even the least harmful of viruses could be life-threatening. For example, in the context of a hospital life-support system, a virus that simply stops a computer and displays a mes ....etc

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CELL PHONE VIRUSES AND SECURITY

As cell phones become a part and parcel of our life so do the threats imposed to them is also on the increase. Like the internet, today even the cell phones are going online with the technologies like the edge, GPRS etc. This online network of cellphones has exposed them to the high risks caused by malwares viruses, worms and Trojans designed for mobile phone environment. The security threat caused by these malwares are so severe that a time would soon come that the ....etc

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