COMPUTER SECURITY:

INFORMATION AND

ACCOUNT

By: Jack Denman

1.1 Computer Performance

Your computer performance could be affected by a virus: Makes your system run slower

Takes longer to do thingsCould retrieve information from you computer

and allow access to it

1.2 Protecting your system

Firewalls Anti Virus Regular system scans Keeping your anti virus software up to date

1.3 Threats Viruses – “live” within computer programs which makes them become infected,

e.g. Sampo and Hare.Computer viruses are generally classified as:Boot Sector, Terminate and Stay resident, Macro, Multipartite, Companion and

Polymorphic. Types of viruses:• Computer Worm- Often used to exploit computers’ files• Trojans- often hidden in programs that are not likely to contain a threat, Trojans

tend to self destruct and leave no evidence of them being there• Logic Bomb- Like a Trojan but can be set to go off at a certain time and date on the

computer

1.4 Precautions

Anti viruses that can block attacks e.g. Avast, Norton, McAfee, A.V.G etc...

Firewalls be careful if some Firewalls are turned off

Don’t go on un secure websitesBe careful with what you download

1.5 Guidelines for helping staff

Change passwords monthly to avoid hackingAnti virus updates Blocking certain websites

1.6 Why it is important to back up data

It is important to back up data as if your system does get attacked you could lose important files if you back things up you can still have them

Bibliography

http://www.dce.kar.nic.in/new%20files/Chapter25-9-07.pdf

WikipediaGoogle