Presented ByCse 2nd year

S.karuna nidhi &

T.phanedra babu

Introduction

What is Computer Virus

“A computer virus is a program that can copy itself and infect a computer without

permission or knowledge of the user”

HistoryPakistani Brain Virus (1986): boot sector virus

called (c)Brain, created in 1986 by two brothers, Basit and Amjad Farooq Alvi, operating out of Lahore, Pakistan

Apple Virus 1 (1981): Boot sector infecting virus. Possibly created for pirated games.

Animal (1975) (Univac): “Guess an animal” game.

Email Networks Removable Storage Media Pirated Software

Symptoms of Virus AttackComputer runs slower then usual Computer no longer boots up Screen sometimes flicker PC speaker beeps periodically System crashes for no reason Files/directories sometimes disappear

Different Types of Malware

Trojan Horse

CovertLeaks informationUsually does not reproduce

WormsSpread over network connectionWorms replicateFirst worm released on the Internet was called

Morris worm, it was released on Nov 2, 1988.

An Example Of Error Message Due To Virus

Antivirus

“Examining (scanning) files to look for known viruses matching definitions in

a virus dictionary”

Different Anti-virus Programs

Activity monitorsAuthentication or change-detection softwareScanners

Top Seven Antiviral Programs

Kaspersky AntivirusData Fellows F-PlotMcafee AntivirusSymantec Norton AntivirusBit Defender 2010Quick Heal AntivirusAVG Antivirus

General Security Tips Apply user-level security on file sharing

when needed. Don't open email attachments from

unknown senders. Use Rich Text Format files instead of

Word Documents. Updated anti-virus program Set the BIOS boot sequence Write protection

“It is good to be aware of viruses and malware rather

then being sorry…..”

THANK YOU

Any Question?