For internet users, upgrading their existing versions of antivirus from time to time is a must to protect their system from malicious virus programs. Stealth viruses are one considered one of the most dangerous types of viruses as they can escape the usual detection efforts of antivirus software you have installed in your system. This is a typical type of polymorphic virus. Common examples of this virus include Whale and Frodo. Usually a stealth virus adds adds a specific number of bytes to a infected file and then subtracts the same number of bytes from the size specified in a directory. Boot sector viruses also fall in this category. These viruses copy the actual boot sector to a different place in the hard disk and await the efforts of other programs to look into the real boot sector. In case the virus is detected by your antivirus software, it interrupts the attempt and changes the direction of the software to original boot sector on the hard disk. As a result the antivirus reports that the boot sector is allright and so this virus doesn’t get detected.
Polymorphic viruses operate by using an encoding engine which keeps on changing each time they reproduce. As a result the encoded virus keeps remains functional and by avoiding detection infects your system. Stealth viruses can operate in a number of ways. They often transform with each infection and therefore cannot be diagnosed easily. They can also change according to generation. Speed of transformation varies as well which makes the problem even more complex. Once they enter your system, these viruses can damage your BIOS and even format your hard drive.
To have these viruses removed from your system within a short time span, you need to have computer optimization done at least once in a month. As a result your system will remain safe and will provide you with satisfactory performance over a long span of time. These support services can be procured online and that too at a reasonable price. These services can be used at any time period on any date and location and you as a user don’t have to go anywhere looking for computer help.
By contacting the service provider on their help line you will be able to contact the company’s technical experts directly and explain to them the problems which you are facing. These technicians will use online remote technology to connect to your PC’s system and fix it within a short time period. Apart from installation and configuration of antivirus programs such a company will provide you with latest updates about the new versions of virus removal programs which you can download from time to time. Companies provide different types of service plans as per the requirements as well as budgets of different types of clients. Depending upon your usage, requirements as well as budget you can go for the online computer support plan of your choice.