Basic of Computer Science - Virus
Basic of Computer
Science – Virus
A virus is a computer code or program, which is capable of
effecting your computer data badly by corrupting or destroying them.
Computer virus has the tendency to make duplicate copies t a
swift pace, and also spread it across every folder and damage the data of your
computer system.
A computer virus is actually a malicious software program or
“malware” that, when infecting your system, replicates itself by modifying
other computer program and inserting its own code.
Infected computer program may include data files, or even
the “boot” sector of the hard drive.
Types of Virus
Following are the major types of computer virus –
Worms
This is a computer program that replicates itself at a swift
pace. Unlike a computer virus, it is self-contained and hence does not need to
be part of another program to propagate itself.
Trojan Horse
A Trojan Horse is also a sort of destructive program that
remains disguised in normal software
program. It is not exactly a virus, as it cannot replicate itself. However,
there is possibility that virus program may remain concealed in the Trojan
Horse.
Bombs
It is similar to Trojan Horse, but Logic bomb have some specialty; these include a
timing device and hence it will go of only at a particular date and time.
How Does Virus Affect?
Let us discuss in what way a virus can affect your computer
system. The ways are mentioned below –
- By downloading file from the Internet.
- During the removable of media or drives.
- Through pen drive.
- Through e-mail attachment.
- Through e-mail attachments.
- Through unpatched software & services.
- Through unprotected or poor administrator passwords.
Impact of Virus
Let us now see the impact of virus on your computer system –
- Disruption the normal functionality of respective computer system.
- Disrupts system network use.
- Modifies configuration setting of the system.
- Destructs data.
- Disrupts computer network resources.
- Destruct of confidential data.
Virus Detection
The most fundamental method of detection of virus is to
check the functionality of your computer system; a virus affected computer does
not take command properly.
However, if there is
antivirus software in your computer system, then it can easily check programs
and files on a system for virus signature.
Virus Preventive Measures
Let us now see the different virus preventive measures. A
computer system can be protected from virus through the following –
- Installation of an effective antivirus software.
- Patching up the operating system.
- Putting up the client software.
- Putting highly secured password.
- Use of Firewalls.
Most Effective Antivirus
Following are the most popular and affective antivirus from
which you can choose one for your personal computer –
- McAfee Antivirus Plus
- Symantec Norton Antivirus
- Avast Pro Antivirus
- Bitdefender Antivirus Plus
- Avira Antivirus
- Webroot Secure Anywhere Antivirus
- Emsisoft Anti-Malware
- Quick Heal Antivirus
- ESET NOD32 Antivirus