Most people who write virus's target the windows OS they just don't bother with Linux. Usually anyone who can use Linux wont find any difficulty in removing virus's, so theres no point in sending them a virus.
Linux operating systems are well protected, but not immune to viruses, and can still be afflicted by rootkits and trojans. 'Kaiten' and 'rexob' are the names of two Linux trojans. 'Brundle', 'Nuxbee' and 'VIT' are just three Linux viruses.
Linux is "protected" in that it is very well designed and secure, and any virus written for it will very soon be made obsolete through constant bug fixing. It is not perfectly immune from them, though.
As there are no wild viruses for Linux there is nothing to "take them off."
There are no wild computer viruses that affect Linux. Oh wait, there was RST.b. If you need to, you can run certain windows viruses under Linux with wine.
Yes, Linux applications have significantly less viruses than Windows or Mac's OS. As Linux makes up less than two percent of OS usage, it makes no sense to the creators of viruses to make a virsus for Linux.
It isn't protected against all viruses .. see related link.
First of all, Unix (and even Linux) is NOT virus free. Although rare, there are viruses for such systems.One of the primary reasons that Unix / Linux do not get as many viruses is that the ability of different users is limited. Non-technical users will be restricted in their ability to install, run, or modify software. More experienced users will usually be given more privileges. Without inexperienced users installing software at a whim, over 90 % of the threat of viruses and malware is removed.Linux is even further protected against viruses because Linux is by nature a heterogeneous platform. To be effective, the program would have to be capable of affecting multiple versions of the kernel, and use exploits in a variety of programs.
It's not really more vulnerable. Windows is more widely used so it has more viruses written for it.
A Linux system generally gets the least viruses
The use of a Linux Virtual Machine is to run a copy of Linux on your current operation system. This will allow you to run various applications that only run on Linux.
That would depend on what you want to protect Linux from. Ports are closed by default, so there is little need for a firewall. There are several anti-virus products available for Linux, but as there are very few Linux viruses, and no currently effective ones, they are only helpful in removing Windows viruses.
Computers are susceptible to viruses unless they are protected by special software and firewalls.