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Wednesday, April 27, 2011

How to keep your computer clean 1

Here are some tips for any Internet user to stay out of any malicious software like viruses and spyware.

1.Computer viruses spread mainly by e-mail these days.
Do not open any strange e-mails from people you don't know. Do not open any attachments from the list bellow before at least scanning them with an antivirus even though they were sent by a friend:
- *.bat (batch files, executes MSDOS scripts)
- *.exe (executable file)
- *.vbs (Visual Basic Scripting)
- *.scr (screen savers)
- *.com (command-line)
- *.js (java scripting)
- *.anything.exe - keep in mind that there are many viruses which rename files like track01.mp3 to track01.mp3.exe. Any version of Windows, by default, hides known file types extensions so it will show only track01.mp3 hiding .exe. Look at the file's icon, it's a good start.
 



viruses take advantage of the trusted contacts in your address book to send them (from your mail address) an infected attachment. This works both ways, so don't open anything suspicious sent by your contacts.
Another good sign is the attachment's size. Viruses usually have just a few KB. If you receive a so called small movie or song which is 20kB or so, something is wrong for sure.

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