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Computer Security

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  1. Viruses Hacking Backups Computer Security By: Anika Madaan

  2. What are Viruses? They can damage and delete your files. They can stop you using your computer or getting in to it. They can spread quickly and cause harm to other computers and crash them. They can copy themselves as well. A virus is an unwanted, harmful computer software that can spread to other computers and cause harm to them too.

  3. Types of Computer Viruses • There are loads of different types of viruses but some common types of computer viruses are: • Macro viruses, these are mini programs that infect files that were created using certain applications or programs that contain macros such as Relax, Melissa.A, Bablas. • Worms, these can be detected and eliminated by antiviruses, but they can self-replicate and lead to bad effects on your system such as PSWBugbear.B, Lovgate.F, Trile.C, Sobig.D, Mapson. • Trojans are another harmful virus but it cannot self-replicate or reproduce by infecting other programs.

  4. Protecting your computer from viruses and Anti-viruses To prevent yourself from getting computer viruses you can install anti-virus software (such as McAfee, AVG or Norton), refrain from opening useless or harmful e-mails or messages. There are however, drawbacks to using anti-virus software as it can slow your computer down. Also it can sometimes be very complicated and a long task to set it up and confusing.

  5. Hacking • Hacking is when someone gains illegal access to your personal files and documents without your permission. • They can look at your wills, medical reports, private images, CVs and credit card details. • They can damage your files or do harmful things to your documents just for fun. • They can send viruses and Trojans to your computer and then hijack it.

  6. How can you prevent Hacking? • There are a few easy, simple ways that you can prevent hackers hacking into your stuff such as: • Having User Ids and Passwords that are safe and not obvious. • Installing Firewalls – Software that blocks access and stops data from being sent out. • Turning your internet off as soon as you’ve finished using it because hackers can gain access to it.

  7. Backups • It is very important to back up all of your documents and pictures so that if for some reason they get deleted, destroyed or lost then you can get them back. • You can back up your information on a memory stick, burning it onto a CD or putting it on a hard drive. • ENCRYPTING your files can prevent hackers from getting into them or invading them. It just means adding a password. • Sometimes doing a full backup can take too long so just backup important things if you are in a rush. • You can take screenshots of your documents or save it in another location.

  8. My Memory Stick Sensible name for my presentation so I can find it easily

  9. Thank you for watching!!