diff --git a/.devcontainer/devcontainer.json b/.devcontainer/devcontainer.json
new file mode 100644
index 0000000..39bbd26
--- /dev/null
+++ b/.devcontainer/devcontainer.json
@@ -0,0 +1,4 @@
+{
+  "image": "mcr.microsoft.com/devcontainers/universal:2",
+  "features": {}
+}
diff --git a/SECURITY.md b/SECURITY.md
new file mode 100644
index 0000000..034e848
--- /dev/null
+++ b/SECURITY.md
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+# Security Policy
+
+## Supported Versions
+
+Use this section to tell people about which versions of your project are
+currently being supported with security updates.
+
+| Version | Supported          |
+| ------- | ------------------ |
+| 5.1.x   | :white_check_mark: |
+| 5.0.x   | :x:                |
+| 4.0.x   | :white_check_mark: |
+| < 4.0   | :x:                |
+
+## Reporting a Vulnerability
+
+Use this section to tell people how to report a vulnerability.
+
+Tell them where to go, how often they can expect to get an update on a
+reported vulnerability, what to expect if the vulnerability is accepted or
+declined, etc.