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DISHA PATEL COMPUTER VIRUS PPT.pptx
- 1. Presented By- DISHA PATEL CLASS VII-D ROLL NO.- 13 SUBMITTED TO- MRS. khusHboO sahai A PRESENTATION ON COMPUTER VIRUS
- 2. Introduction How Does It Spread Symptoms Prevention Types Of Computer Virus Boot Sector Virus Program File Virus Multipartite Virus Macro Virus Malware Worm Spyware Trojen Horse Conclusion
- 3. Computer viruses are a type of software program that, like a biological virus, reproduces and spreads itself. Full Form: Vital Information Resource Under Seizes. Some virus may display only a message on the screen, others may slow down the Pc. They can also erase files or even format your floppy or hard disk and crash the system. Creeper Virus: The first detected on APRANET in the early 1970's. Popular Viruses: Jerusalem or Israeli Virus, Brain or Pakistani Virus, April First, Ping Pong or Bouncing Ball, Stoned, Dark Avengers, Love bug, Ransomware.
- 4. Computer viruses spread by attaching themselves to other computer program file. When you exchange a file or pen drive with a virus, the virus spreads from one computer to the another. Viruses also spreads when a Computer Engineer comes to repair your system and puts his/her diagnostics disks in your PC.
- 5. Letters looks like they are falling to the bottom of the screen. The computer system becomes slow. The size of available free memory reduces. The hard disk runs out of space. The computer does not boot. Fail to print correctly. Restarts itself often.
- 6. Upload and use antivirus software. Be aware of the e- mails and attachments you open. Check for updates on antivirus software regularly. Make sure antivirus software is installed correctly. On the computer, turn on the firewall. Keep the computer operating system up to date.
- 7. Boot Sector Virus Program File Virus Multipartite Virus Macro Virus
- 8. Infects the boot or Master Boot record (MBR), contains info about the drive and the bootstrap loader of diskettes and hard drives through the sharing of infected disks and pirated software applications. Once your hard drive is infected all diskettes that you use in your computer will be infected.
- 9. Becomes active when the program file (usually with extensions BIN, COM, EXE, OVL, DRV) carrying the virus is opened. It then makes copies of itself and will infect other programs on the computer.
- 10. Hybrid of a Boot Sector and Program viruses. It infects program files and when the infected program is active it will affect the boot record.
- 11. Programmed as a macro embedded in a document, usually found in Microsoft Word and Excel. Once it gets in to your computer, every document you produce will become infected. Relatively new type of virus and may slip by your antivirus software if you don't have the most recent version installed.
- 12. Malware, short for malicious software, refers to any intrusive software developed by cybercriminals (often called hackers) to steal data and damage or destroy computers and computer systems. Examples of common malware include viruses, worms, Trojan viruses, spyware, adware, and ransomware.
- 13. A computer worm is a type of malware whose primary function is to self-replicate and infect other computers while remaining active on infected systems. A computer worm duplicates itself to spread to uninfected computers.
- 14. Spyware is a type of malicious software -- or malware -- that is installed on a computing device without the end user's knowledge. It invades the device, steals sensitive information and internet usage data, and relays it to advertisers, data firms or external users.
- 15. Trojan horse is a program downloaded and installed on a computer that appears harmless, but is, in fact, malicious. Unexpected changes to computer settings and unusual activity, even when the computer should be idle, are strong indications that a Trojan is residing on a computer.
- 16. Computer viruses and worms can so easily be placed into your work station so you must be careful when going on the internet, opening emails from unknown users, make sure you have some kind of anti-virus software and always get updates so that you aren't helping to spread viruses and worms Other people as well as harming yourself and your pocket.