Minor change for content

README.md

@@ -34,6 +34,7 @@ DevOps is the combination of cultural philosophies, practices, and tools that in
 - [Programming Languages](#programming-languages)
 - [Chat and ChatOps](#chat-and-chatops)
 - [Secret Management](#secret-management)
+- [Security](#security)
 - [Sharing](#sharing)
 - [VPN](#vpn)
 - [Resources](#resources)
@@ -271,7 +272,6 @@ DevOps is the combination of cultural philosophies, practices, and tools that in
 - [Alerta](https://github.com/alerta/alerta) - Scalable, minimal configuration and visualization monitoring system.
 - [Cabot](https://github.com/arachnys/cabot) - Self-hosted, easily-deployable monitoring and alerts service.
 - [Amon](https://github.com/amonapp/amon) - Modern server monitoring platform.
-- [Flapjack](https://flapjack.io/) - Monitoring notification routing + event processing system.
 - [Icinga](https://icinga.com/) - Monitors availability and performance, gives you simple access to relevant data and raises alerts.
 - [Monit](https://mmonit.com/monit/#home) - Managing and monitoring Unix systems.
 - [Naemon](http://www.naemon.org/) - Fast, stable and innovative while giving you a clear view of the state of your network and applications.
@@ -288,7 +288,7 @@ DevOps is the combination of cultural philosophies, practices, and tools that in
 - [Keep](https://github.com/keephq/keep) - Open source alerting CLI for developers.
 - [Globalping CLI](https://github.com/jsdelivr/globalping-cli) - Run network commands like ping, traceroute and mtr from hundreds of global locations.
 - [Grai](https://github.com/grai-io/grai-core) - Open source observability integrating data impact analysis into CI.
-- [Canary Checker](https://canarychecker.io) - Open source health check platform 
+- [Canary Checker](https://canarychecker.io) - Open source health check platform.
 - Metrics/Metrics collection
   - [Thundra Foresight](https://www.thundra.io/foresight) - Visibility into CI pipeline by spotting test failures in no time.
   - [Prometheus](https://prometheus.io/) - Power your metrics and alerting with a leading open-source monitoring solution.
@@ -299,6 +299,7 @@ DevOps is the combination of cultural philosophies, practices, and tools that in
   - [Influxdata](https://www.influxdata.com/) - Time series database.
   - [Netdata](https://www.netdata.cloud/) - Instantly diagnose slowdowns and anomalies in your infrastructure.
   - [Freeboard](https://github.com/Freeboard/freeboard) - Real-time dashboard builder for IOT and other web mashups.
+  - [Autometrics](https://autometrics.dev/) - An open source micro framework for observability.
 - Logs Management
   - [Anthracite](https://github.com/Dieterbe/anthracite) - An event/change logging/management app.
   - [Graylog](https://github.com/Graylog2/graylog2-server) - Free and open source log management.
@@ -405,6 +406,12 @@ DevOps is the combination of cultural philosophies, practices, and tools that in
 - [Infisical](https://github.com/Infisical/infisical) - Open source end-to-end encrypted secrets sync for teams and infrastructure.
 - [Lade](https://github.com/zifeo/lade) - Automatically load secrets from your preferred vault as environment variables.
 
+## Security
+
+*Validating, lint and best practice in term of Security on code or infrastructure.*
+
+- [checkov](https://github.com/bridgecrewio/checkov) - Prevent cloud misconfigurations and find vulnerabilities during build-time in infrastructure as code, container images and open source packages.
+
 ## Sharing
 
 *A collection of tools to help with sharing knowledge and telling the story.*
@@ -440,7 +447,7 @@ as an academic project from University of Tsukuba, under the Apache License 2.0.
 - [Hands-On Security in DevOps](https://www.packtpub.com/networking-and-servers/hands-security-devops)
 - [Site Reliability Engineering](https://sre.google/sre-book/table-of-contents/)
 - [The Site Reliability Workbook](https://sre.google/workbook/table-of-contents/)
-- [Building Secure & Reliable Systems](https://static.googleusercontent.com/media/sre.google/ro//static/pdf/building_secure_and_reliable_systems.pdf)
+- [Building Secure & Reliable Systems](https://google.github.io/building-secure-and-reliable-systems/raw/toc.html)
 - [Infrastructure as Code: Managing Servers in the Cloud](http://shop.oreilly.com/product/0636920039297.do)
 - [The DevOps Handbook](https://www.oreilly.com/library/view/the-devops-handbook/9781457191381/)