[General Moment]: Create SECURITY.md (#956)

CHANGELOG.md

@@ -15,6 +15,7 @@ The format is based on [Keep a Changelog v0.3.0](http://keepachangelog.com/en/0.
 ### Changed
 
 - `sv_mapRotationCurrent` supports `exec` directive for executing cfg scripts from the `game_settings` folder
+- `SetPing` GSC method is now deprecated.
 
 ### Fixed
 

SECURITY.md

@@ -0,0 +1,17 @@
+## iw4x-client Security
+We take security very seriously at XLabsProject. We welcome any peer review of our 100% free software source code to ensure nobody's IW4x clients or servers are ever compromised or hacked.
+
+### Where should I report security issues?
+
+In order to give the community time to respond and upgrade we strongly urge you report all security issues privately.
+Please e-mail MauriceHeumann@gmail.com directly to provide details and repro steps.
+
+### Other key people
+
+In the exceptional case that you do not receive a response within a reasonable time frame from our lead developer, please contact any of the following people:
+- Future/diamante0018: iw4x-sp@proton.me
+
+We will try respond as soon as possible, but please note:
+
+### This is an entirely free software project. It is maintained in our spare time.
+### We cannot guarantee quick responses but we very much appreciate your discretion when reporting security vulnerabilities.