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 * [jessfraz/bane](https://github.com/jessfraz/bane) - AppArmor profile generator for Docker containers.
 * [Kim Hirokuni](https://kimh.github.io/blog/en/docker/gotchas-in-writing-dockerfile-en/) - (2014) Gotchas in Writing Dockerfile
 * [Center for Internet Security (CIS)](https://www.cisecurity.org/cis-benchmarks/) - CIS Benchmarks: 100+ free downloadable configuration guidelines for various technology groups to safeguard systems against today’s evolving cyber threats. | Lot of useful information to harden windows/linux operating systems, secure server softwares, docker containers, etc.
+* [Diogo Mónica](https://diogomonica.com/2017/03/27/why-you-shouldnt-use-env-variables-for-secret-data/) - (2017) Why you shouldn't use ENV variables for secret data
 
 ## ChatOps
 * [nixCraft](https://www.cyberciti.biz/open-source/awesome-chatops-foss-software-for-conversation-driven-development-management/) - 7 Awesome ChatOps Open Source Software For Conversation-driven Development and Management
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 * [CoreOS Blog](https://coreos.com/blog/vulnerability-analysis-for-containers.html) - Clair: Open Source Vulnerability Analysis for your Containers
 * [jessfraz/bane](https://github.com/jessfraz/bane) - AppArmor profile generator for Docker containers.
 * [Center for Internet Security (CIS)](https://www.cisecurity.org/cis-benchmarks/) - CIS Benchmarks: 100+ free downloadable configuration guidelines for various technology groups to safeguard systems against today’s evolving cyber threats. | Lot of useful information to harden windows/linux operating systems, secure server softwares, docker containers, etc.
+* [Diogo Mónica](https://diogomonica.com/2017/03/27/why-you-shouldnt-use-env-variables-for-secret-data/) - (2017) Why you shouldn't use ENV variables for secret data
 
 ## GPG
 * [Charles Zachary Lockhart](http://irtfweb.ifa.hawaii.edu/~lockhart/gpg/) - GPG Cheat Sheet