How are viruses and malware created ?

Though creating a malware or virus is an offence and attracts punishment, I think the people who create them must be geniuses to have known how to penetratre security blocks and get bad things done.

But how do they create these viruses and malware ?

What computer language do they use ?

How does a virus work in harmony with an operating system ?

Could somebody explain these things in detail, please ?

PS: No funny answers, please.

How are viruses and malware created ?symatec

The computer Language isn't important. I assume as long as it can run natively on the operating system it can written in anything (I recall a story of a guy writing a virus in BASIC for the office printers in the place he was fired from) But from what I understand most venerablities in the system are written in C.

Viruses don't work in ''harmony'' with the system, rather they hide themselves inside/behind the processes your computer normally runs. A lot of the time they'll hide inside the system restore where they'll reinfect a computer after a time. One of the key issues with windows is it's memory allocation. A virus asks for CPU, it gets it. Nix systems are more resistant against this.

Creation depends on what the virus is supposed to do. I remember I had a friend whose dad worked at a company where they wiped the system clean each night. To prove to his dad that the system was venerable he wrote a simple program that would put the piece of malware inside of a locked system folder and continue to copy itself inside the folder until it grew so large it crashed the system. In a way this was a simple program that repeated ''rightclick copy'' over and over again, other badware items are more complex. Their just like your webbrower, written to carry out a certain function.