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@@ -1787,6 +1787,7 @@ I spend a lot of time on internet, losing myself in lot of topics. I choose GitH
 * [Ask Hacker News](https://news.ycombinator.com/item?id=15737215) - (2017) How do you deal with operational work as a software engineer?
 * [ripienaar/free-for-dev](https://github.com/ripienaar/free-for-dev) - list of SaaS, PaaS and IaaS offerings that have free tiers of interest to devops and infradev
 * [Softpanorama](http://www.softpanorama.org/Admin/admin_horror_stories.shtml) - classification of sysadmin horror stories
+* [Center for Internet Security (CIS)](https://www.cisecurity.org/cis-benchmarks/) - CIS Benchmarks: 100+ 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 etc.
 
 ## Apache 
 * [Duncan Crombie](http://www.the-art-of-web.com/system/logs/) - System: Analyzing Apache Log Files
@@ -3141,6 +3142,7 @@ Raw
 * [docker/docker-bench-security](https://github.com/docker/docker-bench-security) - Docker Bench for Security is a script that checks for dozens of common best-practices around deploying Docker containers in production.
 * [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+ 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 etc.
 
 ## GPG
 * [Charles Zachary Lockhart](http://irtfweb.ifa.hawaii.edu/~lockhart/gpg/) - GPG Cheat Sheet