This is probably a more appropriate post for one of the threads above this one but our little "friends" are not there. They are always talking about Windows as a virus petri dish. However if Linux were to replace Windows on a large scale like they want it would actually be a WORSE virus petri dish precicely because the virus writers would have THE SOURCE CODE and would know exactly how to attack it.
However if Linux were to replace Windows on a large scale like they want it would actually be a WORSE virus petri dish precicely because the virus writers would have THE SOURCE CODE and would know exactly how to attack it. Perhaps. But, a lot of open-source software is not vulnerable because they don't support features like Active X. Whether that is good or bad depends on your point of view.
In comparison to Microsoft Windows, much of open source software is relatively new. In another decade or so, we should start to see whether the availability of source code causes open source software to become more secure because the bugs are found and eliminated earlier, rather than being concealed until someone stumbles across them.