Sunday, September 7, 2008

Prevention from trojans

We all are always troubled by the Trojans. Put a pendrive in, and the misery starts. So here are a few things you could do in order to be safe from the trojans.

Lets first identify the ways trojans spread:
1. By allowing pendrives to autorun
2. By receiving trojans from infected computer on the same network
3. By being stupid

The third point is the most important one. Most people get fooled by the trojans. The best example for this is the NewFolder.exe trojan. It shows a folder icon named the same as its parent directory. Its one of my favourites.

Lets solve the above problems one by one:

1. Goto http://www.microsoft.com/windowsxp/Downloads/power toys/Xppowertoys.mspx and download TweakUI. Install it. To run it go to start -> run, in there type tweakui. You will see the tweakui window, in there is an option to disable autorun for usb devices.
Some people say if you press the left SHIFT key when inserting the pendrive, it stops the autorun (Never worked for me though)
2. Download the Flash Disinfector. It creates an undeleteable folder named autorun.inf in all drives thus blocks trojans from spreading.
3. Better don't open pendrives by double clicking the drive. Go to Start -> Run and open the drive. Suppose it's the f: then type f: and run.

You may also see, some restrictions like unable to see Folder Option, Task Manager, Control Panel,etc. You can use the Restriction Removal Tool (RRT) to remove these restrictions. First install an antivirus, update it, remove all your viruses then run it. Also install Spybot Search & Destroy. Update it, check your system for problems. Another great tool is Noob.Killer, it allows you to remove some common trojans.

Which antivirus is a big question. I would recommend Nod32, Kaspersky, BitDefender 10. Nod32 had always worked for me. To get the username and password needed to update Nod32(new versions), goto this site: http://nod32.areone.cn

You can buy Kaspersky Internet Security for Rs. 999 at any store or you can get it for free from other sources.

Coming to the point of being fooled by the trojan. Go to the Folder Option, and uncheck the "Hide the extension of known filetypes." And think twice before running anything that has a .exe extension if the icon is something else.

Wish you luck with this.
There is one other way of being safe from the trojans and other viruses.
Come to the free and open world of Linux.

Did I miss something? Add a comment.

3 comments:

  1. While Instaling Tweak ui , Its asking Me to specify a program in which twaek should be opened with??
    which program??

    ReplyDelete
  2. You simply install tweakui. To start tweakui, goto run and type tweakui and press run.

    ReplyDelete
  3. http://nod32.areone.cn/

    link is broken provide another one which is existing !

    ReplyDelete