PREVENTION FROM EMAILED VIRUSES

A computer virus is a program that can copy itself and infect users computer without permission of the user.Viruses refers to different malware programs.A virus can spread from one system to other system through network or internet or by carrying in a removable medium such as floppy
disc,pendrive or cd.Viruses can spread from one network to another network through file sharing etc and spreading malicious code.Hence it becomes easier for Virus writers to spread dangerous virus or other Malware through Email,Web and file sharing.These Emails are attached with HTML tags and embedded scripts which can destroy whole pc and delete all valuable information.These Emails can distroy hundreds or thousands of users information with in few keystrokes.

How Email Viruses Work :
There are many ways how a virus can distroy pc through Email.Most common method used by Virus writers is file attachment method to invade users pc.As soon as the user click on Executable file to which virus is attached,this virus enters into users system without his permission and copies his whole data or else it destroys.That’s why you should take care when ever you open mail attached files,even which is send by your friend.Few mail attached viruses are Melissa virus,Klez virus and trojans etc.By following the below steps you can minimize the risk of infecting your computer with email attachment.

Steps to protect your system from email attached virus:
1)Be careful with attachment:
As i told you even if an email sends by your friend if harmful.A few viruses takes email ids from address book and sends to destination from those email ids with attached virus.so ask your friend before downloading the file.Scan those files as soon as you downloaded.Better to delete those files which are infected.Never open a file which comes from unknown person.If you are using Microsoft Outlook download secutiry software which protects your system from email attached virus.NOTE:Never open .vbs extended file.As it contains very harmful virus which distroys your Operating System.

2)Do not hide File extensions:
Most of the Operating systems such as windows 98,Xp etc will now show hidden files.Most of the system files are in Hidden format.Operating systems will not let you to delete those files accidently.Those files are going to infect as soon as you downloaded Email attached virus.
Follow the below steps to show all the files in your computer.
-Double click on My computer.
-Go to Tools.
-Click on Folder Options.
-Go to view and then next click on Show all the files.
-Do not check the Setting “Hide File Extensions For Known File Types”.

3) Use HTML Email Sparingly:
HTML tags helps virus to enter in to others system.HTML tags having few advantages with files.They can change Color,text, including images in email.When you preview the image in your email then virus is activated.These type of virus may distroy your system just by previewing the images.Bubbleboy virus uses this type of method to destroy your system.
To protect your system from these kind of viruses is to Turn off HTML sending and receiving option.Or you can also set this option to not preview.The best option in my view is to use email programs like Courier by Rose City Software which allows you to disable all sending and receiving HTML tags through email.

4)Disable Windows Scripting Host:
ILOVEYOU warm and NewLove warm use the windows script hosting language.Windows script hosting is an optional part in Windows operating system.It can be removed from the system.As soon as the windows script hosting is removed from the system all the dirty viruses enters in your system.Mainly ILOVEYOU warm and NewLove warm.To combat these viruses, you could disable the Windows Scripting Host ability, but those viruses may effect your system in negative ways.

Read here …advantages and disadvantages by using Windows script hosting

Better to install this software called Scrip trap
which traps all html tags and this software will not let html tags to enter in your system without your permission.
Following procedures to disable Windows Script Hosting for different operating systems.
For Windows 95:
All the users who are using windows 95 will have windows script hosting installed internally.Or else it can be installed by using internet explorer.
Procedure to disable Windows script hosting in windows 95:
-Open My Computer.
-Select View and then Options.
-Click on File Types tab.
-Find VBScript “Script File”.
-Select Remove and then click OK.

Procedure to disable Windows script hosting in windows 98:
-Click on Start button in tool bar.
-Go to settings.
-Go to control panal and then click on Add/Remove programs.
-Chose the Windows Setup tab.
-Click on Accessories for details.
-Uncheck Windows Scripting Host.
-Click on OK to save changes.

Procedure to disable Windows script hosting in windows NT:
-Double Click on My computer.
-Select View.
-Click on File Types.
-Find VBScript Script File.
-Select Remove and then press OK.

Procedure to disable Windows script hosting in Windows 2000:
-Double click on My computer.
-Go to tools and then folder options.
-Click on File Types.
-Find VBScript Script File.
-Select delete and then click ok.

5)Buy Anti-Virus software:
If you are not having any antivirus software better to download antivirus software immediately.Or else it will be harmful to your sytem.Popular and commercial antivirus shown below.You can download antivirus softwares from here…
-Avira AntiVir
-Free antivirus - avast
-Free AVG
-Free McAfee
-NOD32
-PC cillin
-Norton