diff --git a/docs/architecture/operating-systems.md b/docs/architecture/operating-systems.md
index c0e6db56..1da4cde8 100644
--- a/docs/architecture/operating-systems.md
+++ b/docs/architecture/operating-systems.md
@@ -1,6 +1,6 @@
 # Operating Systems
 
-Typhoon supports [Container Linux](https://coreos.com/why/) and Fedora [Atomic](https://www.projectatomic.io/) 27. These two operating systems were chosen because they offer:
+Typhoon supports [Container Linux](https://coreos.com/why/) and Fedora [Atomic](https://www.projectatomic.io/) 28. These two operating systems were chosen because they offer:
 
 * Minimalism and focus on clustered operation
 * Automated and atomic operating system upgrades
diff --git a/docs/topics/security.md b/docs/topics/security.md
index 2ccb2b74..cf3fd2ab 100644
--- a/docs/topics/security.md
+++ b/docs/topics/security.md
@@ -40,7 +40,9 @@ Typhoon limits exposure to many security threats, but it is not a silver bullet.
 
 ## OpenPGP Signing
 
-Typhoon uses upstream container images and binaries. We do not currently distribute materials of our own.
+Typhoon uses upstream container images and binaries. We do not distribute artifacts of our own, except where required for system container images ([etcd](https://quay.io/repository/poseidon/etcd), [kubelet](https://quay.io/repository/poseidon/kubelet), [bootkube](https://quay.io/repository/poseidon/bootkube)) for Fedora Atomic only.
+
+If you find artifacts claiming to be from Typhoon, please send a note.
 
 ## Disclosures