Short bio: Computer Scientist, FOSS supporter (read more)
Tux Machines (TM)-specific
That the American National Security Agency has previously helped Microsoft harden various Windows versions is old hat, but what is news is that the NSA now also assists Apple, Sun and Red Hat with increasing the security of their operating systems. This was made publicPDF in a hearing at the US Senate's Subcommittee on Terrorism and Homeland Security.
With these measures the NSA is responding to the increasing number of threats it perceives to critical infrastructures and economic systems. While such efforts are generally laudable, assistance by the NSA quickly tends to create the rumour of government controlled back doors being introduced into commercial products.
Currently, however, the NSA doesn't seem to be involved too deeply.