Announcing security hardened kernels for testing

[Kuba Ober]

> This can't do everything. It protects against return-to-libc style
> attacks but there are other stack based attacks that it doesn't work for
> (if I remember correctly).

I.e. for C++ apps you could instead change the implicit this argument of the 
caller, for example, to point to a made-up instance with a pointer to a 
made-up vtable with function pointers to your own stuff :)

Cheers, Kuba Ober