Friday, June 9, 2017


what is a virus?
A  computer virus is a program that spreads by first infecting files or  the system areas of a computer or network router's hard drive and then  making copies of itself. Some viruses are harmless, others may damage  data files, and some may destroy files. Viruses used to be spread when  people shared floppy disks and other portable media, now viruses are  primarily spread through email messages.
Unlike worms, viruses often  require some sort of user action (e.g., opening an email attachment or  visiting a malicious web page) to spread.
http://...What do viruses do?
A  virus is simply a computer program--it can do anything that any other  program you run on your computer can do. Some viruses are designed to  deliberately damage files, and others may just spread to other  computers.
http://...What is a worm?
A  worm is a type of virus that can spread without human interaction.  Worms often spread from computer to computer and take up valuable memory  and network bandwidth, which can cause a computer to stop responding.  Worms can also allow attackers to gain access to your computer remotely.
http://...What is a Trojan horse?
A  Trojan horse is a computer program that is hiding a virus or other  potentially damaging program. A Trojan horse can be a program that  purports to do one action when, in fact, it is performing a malicious  action on your computer. Trojan horses can be included in software that  you download for free or as attachments in email messages.
http://...Can I get a virus by reading my email messages?
Most  viruses, Trojan horses, and worms are activated when you open an  attachment or click a link contained in an email message. If your email  client allows scripting, then it is possible to get a virus by simply  opening a message. It's best to limit what HTML is available in your  email messages. The safest way to view email messages is in plain text.
http://...How can I avoid a virus infection from email?
Most  users get viruses from opening and running unknown email attachments.  Never open anything that is attached to an email message unless you know  the contents of the file. If you receive an attachment from a familiar  email address, but were not expecting anything, you should contact the  sender before opening the attachment. If you receive a message with an  attachment and you do not recognize the sender, you should delete the  message.
Selecting the option to view your email messages in plain text, not HTML, will also help you to avoid a virus.
http://...What are some tips to avoid viruses and lessen their impact?

  • Install anti-virus software from a reputable vendor. Update it and use it regularly.
  • In  addition to scanning for viruses on a regular basis, install an "on  access" scanner (included in most anti-virus software packages) and  configure it to start each time you start up your computer. This will  protect your system by checking for viruses each time you run an  executable file.
  • Use a virus scan before you open any new  programs or files that may contain executable code. This includes  packaged software that you buy from the store as well as any program you  might download from the internet.
  • If you are a member of an  online community or chat room, be very careful about accepting files or  clicking links that you find or that people send you within the  community.
  • Make sure you back up your data (documents, bookmark  files, important email messages, etc.) on disc so that in the event of a  virus infection, you do not lose valuable work.

© Pilot Prosoft
Source: VIRUS BASIC...

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