Ah Linux et la sécurité...

https://grsecurity.net/passing_the_baton_faq.php

I do not want to spend money, what alternatives are there?

Unfortunately, in contrast to Microsoft's post-Windows XP Trustworthy Computing initiative which drastically changed its security trajectory, the Linux community at large has failed to invest adequately in security over the past two decades. Partially due to this, there is no direct alternative to grsecurity or even any option that provides a substantial fraction of grsecurity's features or overall benefits.

C'est pas moi qui le dit hein... Ok j'aurais peut-être dû attendre Vendredi...