From a security point of view, open source code
no it isn't... *libre* source code is...
I would love to hear your elaboration on how libre source code is more secure than open source. I don't see how libre have any relevance there.
I don't want to make the claim either, but I'd point out that lots of "open source" code isn't really completely "open source", nowadays, but nobody cares (because that's irrelevant to the proponents of "open source"), whereas the Free Software crowd tends to care more.
E.g. some people think their smartphone runs "open source" software, but all there is really is that there's some "open source" code that's claimed to be related to the binary code they have on their phone. But they have no way to verify whether there truly is such a relation, nor would they be able to install the presumably corresponding "open source" code.
So I guess from this point of view, Libre source code is safer because it insists on you being able to replace the binary code with one that you built yourself from the source.
Stefan