The Microsoft Surface RT runs a special version of Windows called Windows RT. The Surface RT has an ARM based microprocessor instead of the traditional Intel/x86 compatible processor used with most other Windows based systems. This different processor requires an operating system that is compatible, hence the Windows RT operating system.
One unique aspect to the Windows RT operating system is that malware written for the standard versions of Windows will not run and therfore won't infect a Surface RT device. In addtion, all apps that are capable of being installed on the Surface RT must be downloaded from the Microsoft App store and contain a digital signature that allows them to run. This is another way in which viruses and malware are prevented from running on the Surface RT. This doesn't mean that the Surface RT is immune to viruses, it just means that a virus would have to be crafted specifically for use with Windows RT.
While fixing a client computer I kept having an issue trying to update their Malwarebytes application. Each time the update would attempt to run it would just hang. The system was fairly clean with the exception of one malware application, Babylon Toolbar. The system was also installed with Norton Antivirus, which has not been an issue in the past.
After several attempts to get the update...
Most boot sector viruses detected by some of the best commercial antivirus software such as Symantec's Norton Antivirus, Microsoft's Security Essentials, or Kapersky's Antivirus can not be removed by these applications. And in many cases a boot sector virus is capable of alluding these applications unless the drive is connected to a clean system that has the AV software actively running.
What is a boot sector virus? This is a computer virus that infects a diskette or hard drive in the area which contains information about the configuration of the disk. The boot sector is used by many computer operating systems to determine how to access the diskette or drive. These viruses replace the critical boot sector program used to start the computer with their own malicious program often causing frequent computer crashes, allowing other malware infections, and performance issues.