PRESENTED BY-ATHARVA GUPTA

CONTENTS What is a computer virus? Typical things that some current

Personal Computer (PC) viruses do

Types of viruses a. Time Bombb. Logical Bombc. Worm Virusd. Boot Sector Viruse. Macro Virusf. Script Virusg. Trojan Horse Prevention and Cure Anti-Virus Anti-spyware Popular Anti-Virus and Anti-

Spyware SoftwareWe Are The Devils Of Your Computer System

What is a Computer Virus?

A computer virus is a malware program that, when executed, replicates by inserting copies of itself (possibly modified) into other computer programs, data files, or the boot sector of the hard drive; when this replication succeeds, the affected areas are then said to be "infected“.

Viruses can be disguised as attachments of funny images, greeting cards, or audio and video files.

What is the full form of VIRUS ?Virus – Vital Information Resources Under

Seize

Typical things that some current Personal Computer

(PC) viruses do Display a message Erase files Scramble data on a hard disk Cause erratic screen behavior Halt the PC Many viruses do nothing obvious at all except

spread!

TYPES OF VIRUSES

Types of Computer

Virus

Time Bomb

Worm

Logical Bomb

Boot Sector Virus

Macros Virus

Script Virus

Trojan Horse

Time Bomb

A time bomb is a virus program that performs an activity on a particular date and time.

Logical Bomb

A logical bomb is a destructive program that performs an activity when a certain action has occurred.

Worm Virus

A worm is also a destructive program that fills a computer system with self-replicating information, clogging the system so that its operations are slowed down or stopped

Boot Sector Virus

A boot sector virus infects boot sector of computers. During system boot, boot sector virus is loaded into main memory and destroys data stored in hard disk

Macro Virus

A macro virus is associated with application software like word and excel. When opening the infected document, macro virus is loaded into main memory and destroys the data stored in hard disk .

Script Virus

Commonly found script viruses are written using the Visual Basic Scripting edition (VBS) and the JavaScript programming languages

Trojan Horse

Trojan Horse is a destructive program. It usually pretends as computer games or application software. If executed, computer system will be damaged.

Trojan Horse usually comes with monitoring tools and key loggers

Preservation and cure Install an Antivirus software Regularly update the program Open email attachment files only

if you are expecting the attached files, or the sender is known and has confirmed sending the file

Try to avoid downloading and installing software from the Internet

Install only registered copies of

software on the system.

ANTIVIRUS An antivirus software is a computer program that

identify and remove computer viruses, and other malicious software like Worms and Trojans from an infected computer. Not only this, an antivirus software also protects the computer from further virus attacks.

Anti-spyware

They can provide real time protection against the installation of spywares on the computer. This type of spyware protection works the same way as that of anti-virus protection.

It scans and blocks all incoming network threats as it comes across.

Anti-spyware scans the contents of the windows registry, operating system files, and installed programs on the computer and will provide a list of any threats found.

Popular Anti-Virus And Anti-Spyware SoftwaresNorton Anti-Virus

MaCfee

Avast

Quick Heal

Panda

Anti-Virus & Anti-Spyware Is The Bodyguard Of Your System