VIRUSES

By Molly Styles

8k

Hacking

Backups

VIRUSES• A computer virus is a computer program that can copy itself and

infect a computer.

• Some viruses can prevent you from being able to use your computer at all. Other viruses damage specific parts of your computer. Some viruses delete your files to cause havoc. Finally, some viruses do nothing harmful at all. There have been many viruses that simply spread themselves about without doing anything dangerous.

• You stop yourself getting a virus by not clicking on unnecessary things or you could use backup/anti-virus software.

• The problems of using anti-virus software are: cost, takes space on computer, have to update every year, makes the computer slow...

Google.co.uk

TYPES OF VIRUSES

TROJANS

WORMS

TROJAN HORSES

FILE INFECTIONSAnswers.com

HACKERS• Hacking is when someone takes control of your computer system

when you are away.

• A hacker is a person who breaks into computers, usually by gaining access to administrative controls.

• You can stop hackers getting onto your computer by using anti-virus software, activating a firewall, making sure your system is up to date & keeping track of your events.

eHow.com

HACKERS CAN:

DELETE FILES

LOOK AT FILES&PICTURES

GIVE VIRUSES

BACKUP• It is important to backup your work because if a hacker hacks into

your computer they could delete all your work.

• You could back up your work onto: • a memory stick/USB

• a disc/CD

• You should keep your backup stored in a safe place. If possible you should keep them on two devices e.g. another computer.

eHow.com

Stuxnet• Stuxnet is a Windows computer worm

discovered in July 2010 that destroys industrial software and equipment.

Wikipedia.co.uk