The killed comment on this thread has a line in it that's spectacular in its misunderstanding (or its dishonesty) that needs a brief explanation:

> Their research are in no way 'directly derivative' of the linux kernel. Their implementation was based on linux

This means that it's captured under the GPL, and anyone can do as they like pursuant to the license (which grsecurity has attempted, repeatedly, to constrain in contravention of that license), and that this guy has an a-gen-da and something to sell you.