| In information security , computer virus is a | | | | Some things what virus can do with computer: |
| manmade program or piece of code that is | | | | |
| loaded onto your computer without your | | | | * Slow down e-mail - generating huge e-mail |
| knowledge and runs against your wishes. From | | | | traffic and slowing down servers; |
| behavior computer virus in a way is a similar | | | | |
| biological virus which pervasions by | | | | * Steal confidential data - for example, |
| inserting itself into living cells. Cell by | | | | recording user's keystrokes; |
| cell and all organisms (computer) is ridden | | | | |
| virus cells. | | | | * Use your computer to attack websites; |
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| Without computer viruses there are separated | | | | * Let other user hijack your computer - |
| two other types of malicious computer | | | | allowing to connect to your computer and use |
| programs - viruses. | | | | it for their own purpose; |
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| Trojan Horses | | | | * Corrupt data - making changes in some |
| | | | documents; |
| As already from this virus type name we can | | | | |
| imagine, Trojan horses are programs that | | | | * Delete data - all or only some part data on |
| pretend to be legitimate software, but | | | | your HDD; |
| actually carry out hidden, harmful functions. | | | | |
| Trojans can't replicate themselves that mean, | | | | * Play pranks; |
| they can't expand so fast as other virus | | | | |
| types. But often they work together with | | | | * Damage credibility - forwarding itself from |
| viruses. | | | | your computer to your friends or even |
| | | | business partners; |
| Worms | | | | |
| | | | * Cause embarrassment - for example, |
| Worms are similar to viruses but do not need | | | | replacing one word in all documents with |
| a carrier program or document. Worms simply | | | | other. |
| create exact copies of themselves and use | | | | |
| communications between computers, for example | | | | Every year computer viruses activity brings |
| e-mail, to spread.There are different types | | | | to company several million dollars damages. |
| of computer viruses with different influence. | | | | Year for year this number of damage increase! |
| Some viruses are fairly harmless or only | | | | |
| annoying, but there are viruses that can | | | | Because it is so important that every people |
| create inconceivable damages. | | | | get information security awareness training! |
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