I was using "linux/OSS" to refer to software which originates from the the linux ecosystem and implying the cross platform aspect. I did not use the phrase "cross platform" because I assumed (perhaps wrongly) that cross platform software which originates from the OSX ecosystem is less vulnerable since they tend to know OSX better and keep up to date on changes in OSX. I probably should have just said "software from the linux ecosystem" but my language skills have been lacking today.