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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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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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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magine if killing flu viruses and other microbes were as simple as turning on a light.

Exposing a unique surface coating to light may in fact hold the key to protecting you from virtually all viruses and bacteria, including the feared avian flu.

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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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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potential power aid by a harmless viruses called bacteriophages its a genetically manipulate viruses to build structures packed with tiny conductive wires would replace lithium ion with thin stucture future.The DNA of the virus producing an organism with surface proteins designed to attract particles of cobalt and gold. a solution containing the metal- loving viruses to a silicon slide coated with alternating layers of negatively and positively charged polymers.and a transparent film about 10 centimeters by 10 centimeters, containing about a b ....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

Mirror ....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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SUB CODE SUBJECT NAME NAME CONTINUE…,FILL ALGORITHMS
Name of Department

CHAROTAR INSTITUTE OF TECHNOLOGY, CHANGA


FILL ALGORITHMS

Given the edges defining a polygon, and a color for the polygon, we need to fill all the pixels inside the polygon.
Three different algorithms:
1. Scan-line fill
2. Boundary fill
3. Flood fill
Boundary Fill
Suppose that the edges of the polygon has already been colored.
Suppose that the interior of the polygon is to be colored a different color from the edge.
Suppo ....etc

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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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