CSCS 100 Shamoon Bashir 15-10317 Joshua Siddqui 15-10899.

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Presentation transcript:

CSCS 100 Shamoon Bashir Joshua Siddqui

Topic

Content Presentation Contains Definition of Virus Basic Computer VirusesBasic Computer Viruses There FunctionThere Function How to PreventHow to Prevent There PurposeThere Purpose Some HistorySome History

DO YOU HAVE A VIRUS?

What is a virus? A virus is illegal computer code that can destroy data.

COMPUTER VIRUS: Computer Virus: A software program capable of reproducing itself and usually capable of causing great harm to files or other programs on the same computer.

Basic Computer Viruses Trojan Horses Appears as interesting program file but when installed it allows intruders to access and read your files. Worms Virus that copies and multiplies itself by using computer networks and secure flaws. Viruses Use messages to spread which allow it to automatically forward itself to thousands of people

How do viruses spread? Viruses can spread through Attachments Application programs on your computer

Signs Your Computer is Infected Functions slower than normalFunctions slower than normal Responds slowly and freezes oftenResponds slowly and freezes often Restarts itself oftenRestarts itself often Notice applications fail to work correctlyNotice applications fail to work correctly Fail to print correctlyFail to print correctly

When does a virus attack? A virus usually attacks at the specific times or dates determined by the person who wrote the virus code. When the predetermined time or date registers on the internal clock of the computer, the virus attacks. Sometimes the virus code will leave a message letting you know that the virus has done its damage.

Helpful Hints to Avoid Viruses Obtain software only from trusted sources. Use a safe Web browser and client. Install anti-virus software, and keep it update. Scan all newly-obtained disks, programs, and files. Install a firewall program, especially if on cable or DSL.

Some popular anti-virus programs: McAfee Norton Utilities Inoculan F-Secure Internet Guard Dog PC-cillin

Why do People Create Computer Viruses? To take control of a computer and use it for specific tasks To generate money To steal sensitive information (credit card numbers, passwords, personal details, data etc.) To cripple a computer or network

When was first virus created The first virus was made in Chauburji, Lahore, Pakistan, 1986 Two programmers named Basit and Amjad Farooq Alvi “Brain” was the name of that virus.