Merge pull request 'Initial actual content' (#1) from solardiz-patch-1 into main

Reviewed-on: security/wiki#1
Reviewed-by: Neil Hanlon <neil@resf.org>

docs/index.md

@@ -1,16 +1,48 @@
 # SIG/Security Wiki
 
-## Links
+The Security SIG repositories provide extra security-related packages and security-hardened override packages (replacing those from the main distribution) for Rocky Linux and other EL distributions.
 
 ## Responsibilities
 
+Developing and maintaining various security related packages that are not in upstream EL. Identifying, developing, and maintaining security hardening changes relative to upstream EL packages. Occasionally including/backporting additional security fixes that are not yet in upstream EL packages. Contributing to the respective upstreams where practical.
+
+## Repo Installation
+
+```
+dnf install rocky-release-security
+```
+
+## Packages
+
+### Extra packages (for EL8 and EL9)
+
+- [lkrg](https://lkrg.org) (Linux Kernel Runtime Guard)
+- [passwdqc](https://www.openwall.com/passwdqc/) (Password/passphrase strength checking and policy enforcement)
+
+### Override packages (currently only for EL9)
+
+- glibc (adds many security-hardening changes originating from Owl and ALT Linux on top of EL package)
+- openssh (fewer shared libraries exposed in sshd processes while otherwise fully matching EL package's functionality)
+
+The changes are described in more detail in the package changelogs.
+More packages/changes are planned, including override packages also for EL8.
+
+## Contributing
+
+If anyone else wants to join this effort - in any capacity including development, maintenance, testing, documentation, user support, spreading the word, or something else - please join the Mattermost channel below and let us know!
+
+We also welcome well-reasoned suggestions/feedback/preferences on direction we should take (e.g., only making changes on top of EL's vs. offering newer upstream versions), what else to package, and what other changes to include.
+
 ## Meetings / Communications
 
+We hang out in our [Security Mattermost channel](https://chat.rockylinux.org/rocky-linux/channels/security).
+
 ## Members
 
-## Project layout
+Some of the people particularly active with setting up this SIG so far:
 
-    mkdocs.yml    # The configuration file.
-    docs/
-        index.md  # The documentation homepage.
-        ...       # Other markdown pages, images and other files.
+| Name           | Mattermost Name |
+|----------------|-----------------|
+| Neil Hanlon    | @neil           |
+| Scott Shinn    | @atomicturtle   |
+| Solar Designer | @solardiz       |