Computer security

1. For Encrypting files in a folder

Right Click on the folder to be encrypted, click on properties. Select the General tab, click on the Advanced tab below. Check the box to Encrypt contents to secure data and click OK.

2. Don't allow to share a drive or folder in your PC. If you share a folder, its contents will be accessible to others when you are online.

3. Uncheck the box for Hide extensions for known file types. For this, Control Panel->Folder Options (View tab)->Uncheck the box for Hide extensions for known file types. This will show file extensions, virus/worms come as mallika.jpg.exe, if one clicks it thinking it as a jpg picture file, his system will be virus infected. So the above mentioned option will take care of this threat.