On 02/08/18, Benny Pedersen said the following...   
       
    BP> so code is now lost ?, or just unmaintained ?   
      
   Open Source Security (who develops Grsecurity) is a commercial interest and   
   they only make their patch sets available to paying customers. Until recently   
   they allowed beta test versions of their patches to be downloaded and used by   
   the general public, and it was these that the hardened-sources maintainers   
   adapted to their kernel package.   
      
   Technically OSS can't actually stop anyone from releasing the patch sets   
   because of the GPL but given that we're not seeing them widely available I   
   imagine they must be pretty efficient at terminating leaky subscriptions.   
      
    BP> but i think linux could be hardedned in many other ways, make more secure   
    BP> permisions could be a start   
      
   Sure, but the core of the hardened-sources package was the grsec patch set.   
   Most other hardening methods are now incorporated into the 17.x profiles   
   based around the gentoo default kernel package and activated by flags.   
      
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