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SECURITY.md

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+# Security Policy
+
+## Supported Versions
+
+The latest version of Elm Land will receive security
+patches. At the time of writing, here are the latest
+versions:
+
+| Version    | Supported          |
+| ---------- | ------------------ |
+| 0.18.2     | :white_check_mark: |
+| < 0.18.1   | :x:                |
+
+## Reporting a Vulnerability
+
+To report a vulnerability, please open an issue with the following title format:
+
+> "🔐 Security – <the problem goes here>"
+
+In the body of the issue, it would be helpful to describe what the security issue is,
+and any resources where others have fixed the vulnerability.
+
+All updates on the security issue will be provided as comments and discussion within that
+GitHub issue!