We have already learnt many things about the
computer virus. In spite of that, we should learn
more keeping in mind the security of our computer.
It harms the computer As the virus infects the
human body, the computer virus infects the
computer. The full form of ‘VIRUS’ is ‘Vital
Information and Resources Under Siege’ Which
indicates taking control of important information or

damaging something. It was named by Professor Fred Cohen, renowned
researcher of University of New Haven. Virus is a kind of software that attacks
data and information, and it has the power to increase its number. When a virus
enters the computer, it gradually increases in number and attacks the data
stored there, and finally makes the computer unusable after infecting the etire
device. For example, booting virus attacks booting sector of hard disk. Stone,
Vienna, ClH, Folder, Trojan horse, etc. are some most familiar viruses.

If the ICT device is somehow infected with virus, it gradually increases in
number. If a virus infected file enters a Virus free computer or ICT device
through CD, pendrive or any other device. The virus occupied the memory. It
stays there even after the computer is turned 011‘. Installation of a Virus-infected
programme or software also infects the ICT device in the same way. In this
way, a virus free computer or ICT device is infected with Virus. The same thing
happens when a Virus infected programme or a software is run.

In this way, the Virus occupying the memory, attacks other files and
programmes. Some Viruses instantly infect all the existing files and
programmes, and some Viruses infect only new programmes and files. Thus,
the virus deletes files and corrupts programmes, and causes a serious damage
to the machine. In this way, a Virus free computer is gradually infected with
Virus, and it may spread to other computers through the CDs used in the
infected machine, hard disk and the Internet.

The symptoms given below indicate that the computer and ICT devices are
infected by a Virus.

  • Opening a file and pregame takes longer than the usual time;
  • The memory has little space, leading to a slow performance of the
    computer;
  • Showing unexpected messages incompatible with the works while running
    the computer;
  • Installation of a programme takes longer than the usual time;
  • The running files take more space ;
  • The machine shuts down during booting or working time;
  • The names of the folders are replaced with cryptic names;
    Avirus can cause the following damages:
  • It can erase any saved data or file;
  • It can corrupt data;
  • Abrupt and unexpected messages can be Viewed while working in
    computer;
  • The display of computer monitor can be corrupted;
  • The entire system can be slowed down;

What can we do to get rid of this situation? Here comes the question of
antivirus. Anti-Virus can relieve us from this problem. Antivirus is the
preventive of computer virus. If the system is infected with virus, it should be
wiped out. Antivirus utility is forced to prevent virus infection. At first, these
utilities find similarities with the samples of Viruses in infected computers. The
antivirus software by using its experience repairs the original programme. An
effective antivirus can wipe out hundreds of Viruses. When a new virus comes
into being, update the antivirus to enhance its power and effectiveness. As a
result, it can destroy new Virus. Now, there are a lot of antiviruses that can
identify, prevent, and wipe out virus. Nowadays, antivirus software remains
attached with every Operating System Software. Besides, the existing
antiviruses destroy the viruses before the attack or warn the users. Therefore,
the anti-virus software developed nowadays is more effective than the one used
in the past. So, we should keep the antivirus updated.

Now, we can download antivirus software free of cost from the Internet to get
rid of Virus-attack, and after installing it, we can ensure the security of the
devices. The names of some trustworthy antivirus are given below:

  • AVG antivirus software (Downloading Website: www.avg.com)
  • Avira antivirus software (Downloading Website:www.avira.com)
  • Avast antivirus software (Downloading Website:www.avast.com)

We can follow the steps mentioned below to prevent our ICT device from Virus
attack:

  1. CD5, pendrives, memory cards etc. used in other computers should be
    cleaned and made virus-free before using in your own computer;
  2. Software used in other computers should be virus free before using in your
    own computer;
  3. Any file copied from other computers needs to be cleaned by anti-virus
    software before you use it in your computer;
  4. Be careful when you install a piece of software in your compute from the
    interet. If the downloaded software contain any Virus, that may infect your
    virusfree computer;
  5. Do not install any software used in other computer or device;
  6. Always keep updated antivirus software in your computer so that prior
    warning message can be received when a Virus starts attacking the
    computer. As a result, the computer may be disinfected right away
    following the recommended process;
  7. Data or files of everyday should be saved in different disk or pendrive as a
    back up, but the disk or pendrive must be Virus free;
  8. Be careful in exchanging emails. Don’t open any email of a doubtful source.
    If you open it, make it Virus free before opening;
  9. Be very careful and check virus before using game files;
Categories: SECURITY

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