In my previous post we introduced the concept of UTMs. In this post let us take a look at a common security problem.
In our everyday life we often hear people complain how their computer got infected by a 'virus'. Well in reality it may not always be a virus but some other malicious stuff. The correct term to be used in such case is 'malware'.
There maybe different types of malwares like Viruses, Worms, Trojans, Rootkits, etc. In this post we'll take a look at virus and worms.
Viruses:
A computer virus is mostly an executable that attaches itself to a program or a file. It can spread over other systems when such files are shared.
Almost all viruses are attached to an executable file and infect the system when the malicious program is run.
A virus needs a human interaction (like a double-click on an infected file) to spread. Or we can say that a virus does not spread on its own.
A virus can be a simple one like a simple batch command which shuts down a system or it can be more deadlier for example a virus which formats the complete harddisk or corrupts the RAM!!
Worms:
A worm is similar to a virus in design and the kind of damage it produces but unlike a virus, it has the capability to travel over a network without any human interaction.
Worm copies itself over a network.It is a program that views the infection point as another computer rather than as other executables files on an already infected computer
In our everyday life we often hear people complain how their computer got infected by a 'virus'. Well in reality it may not always be a virus but some other malicious stuff. The correct term to be used in such case is 'malware'.
There maybe different types of malwares like Viruses, Worms, Trojans, Rootkits, etc. In this post we'll take a look at virus and worms.
Viruses:
A computer virus is mostly an executable that attaches itself to a program or a file. It can spread over other systems when such files are shared.
Almost all viruses are attached to an executable file and infect the system when the malicious program is run.
A virus needs a human interaction (like a double-click on an infected file) to spread. Or we can say that a virus does not spread on its own.
A virus can be a simple one like a simple batch command which shuts down a system or it can be more deadlier for example a virus which formats the complete harddisk or corrupts the RAM!!
Worms:
A worm is similar to a virus in design and the kind of damage it produces but unlike a virus, it has the capability to travel over a network without any human interaction.
Worm copies itself over a network.It is a program that views the infection point as another computer rather than as other executables files on an already infected computer
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