Pewaris’s Weblog


IT Tips & Tricks: Virus

What is a computer virus?

Computer viruses are small software programs that are designed to spread from one computer to another and to interfere with computer operation.

A virus might corrupt or delete data on your computer, use your e-mail program to spread itself to other computers, or even erase everything on your hard disk.

Viruses are most easily spread by attachments in e-mail messages or instant messaging messages. That is why it is essential that you never open e-mail attachments unless you know who it’s from and you are expecting it.

Viruses can be disguised as attachments of funny images, greeting cards, or audio and video files.

Viruses also spread through download on the Internet. They can be hidden in illicit software or other files or programs you might download.

To help avoid viruses, it’s essential that you keep your computer current with the latest updates and antivirus tools, stay informed about recent threats, and that you follow a few basic rules when you surf the Internet, download files, and open attachments.

Once a virus is on your computer, its type or the method it used to get there is not as important as removing it and preventing further infection.

How do I protect myself from viruses online?

You can protect your computer from computer viruses using a few simple e-mail and web browser functions and some anti-virus software. The internet can be a fun and exciting place to explore, but computer viruses travel around using it, and they could seriously damage your computer. If a virus gets on your computer it can delete or even destroy files and software, and even deliver itself to your friends or work colleagues.


Just like a medical virus, a computer virus can come in all shapes and sizes. And a computer virus can cause all kinds of different symptoms on your PC.In general terms, a virus is a tiny little computer program that has the built-in ability to copy itself from one location to another.

It does this by attaching itself to e-mail messages or hiding in the code of some programs.

As well as making copies of themselves to send to your friends, many viruses will delete files on your computer, or even interfere with your software.

That is why they aren’t very popular amongst computer users.

Diagnosing a virus

That doesn’t mean that everything that goes wrong with your computer is always a virus, but it does mean that a virus is something to avoid catching.

To spot whether you’ve got a virus on your computer, you should look for one or more of the following things:

  • your computer being unusually slow
  • new or regularly used floppy disks becoming unusable
  • unusual error messages popping up on screen
  • programmes crashing or slowing down when they’re open
  • documents or folders changing size, name or date
  • unusually slow download speeds

strange screen activity

Save yourself

Even if you check your e-mail messages thoroughly and regularly update your virus definitions, no anti-virus protection is completely failsafe.

Beware attachments!

New viruses appear all the time, and old ones change or ‘mutate’ as they get damaged. The best way to avoid losing all the valuable documents and files on your computer is to make a backup copy.

Regularly saving all your documents and files to a floppy disk, CD or some other data storage, is the best way to avoid any lasting damage to your computer.

If a virus hits your computer, most of the software can be reinstalled, but often your personal documents will be lost.

Backing up your documents allows you to simply transfer all your files back onto your computer after everything has been sorted out and the virus removed.

Golden Rules

Here’s a quick list of the best ways to keep virus free:

  • Install an Anti-Virus program.
  • Keep it up-to-date – this can usually be done free of charge.
  • Get the latest patches and updates for your operating system.
  • Never automatically open e-mail attachments.
  • Download or purchase software and programs from trusted, reputable sources.
  • Make backups of your important files.

Disaster Recovery and Business Management

Data backup is said to be the best prevention for data loss. Now the question arise what exactly Backup is? It is a process of having duplicate copy of the original one. It is an activity of copying files or databases so that the data will be preserved in case of any accidentally or intentionally deletion of the data.

Since data is very important for higher efficiency, backup is one of the most powerful ways to protect against data loss.

Need for Backup:

There are various reasons for data loss like viruses, application problems, human errors, operating system failure, and many more. Backup plays a vital role for the businesses or the organizations, who spends lot of time on the computer for their personal or business dealings.

According to opinions taking no appropriate steps to preserve the data is the greatest mistake. Some people still follow the old paradigm of “it will never happen to me”. Now this should be changed as data loss can be faced at anytime and by anyone.

No matter what happens to your computer, you should backup because some data can be replaced but the most important files which cannot be retrieved may cause you a severe problem, as a result backing up the files, documents etc is very necessary.

Storage Media:

When you start thinking of backing up the data, first thing comes to your mind what data to backup. Well it depends on how frequent you use your computer, how much your data is important.

So before Backing up your data, the capacity of your data place an important role, identifying the capacity of the backup medium to the quantity of data you propose to backup is very important. It’s a good idea to have something big enough to put a single copy of all your information on one physical thing.

In the earlier days, if a person holds the huge data it would be difficult for him to backup the whole data, as the only media available was the floppy disks which consisted just over a megabyte of data. But now the technology has fully changed, a person can save his data according to the capacity of his data, he can choose the appropriate Medias like:

  • Tape
  • Hard disk
  • Optical Disk like CD, DVD etc.
  • Floppy Disk
  • External Hard Drive
  • Remote backup service etc

Backing up is an important task for any individual or organization, however as data becomes increasing important in business, the loss of data is often sharply felt in terms of cost and effort. Whatever method we choose, but backing up your files are very important because it is the one of the safest method to protect against the worst.



August 19, 2008 - Posted by | Ilmu

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