Merge pull request #140 from webauthn-open-source/JamesCullum-patch-1

Create SECURITY.md

SECURITY.md

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+## Security
+
+We take the security of our software products and services seriously, which includes all source code repositories managed through our GitHub organizations.
+
+If you believe you have found a security vulnerability in any of our repository that meets [Microsoft's definition of a security vulnerability](https://aka.ms/security.md/definition), please report it to us as described below.
+
+## Reporting Security Issues
+
+**Please do not report security vulnerabilities through public GitHub issues.**
+
+Instead, please report them to us using private vulnerability reporting (see [here](https://docs.github.com/en/code-security/security-advisories/guidance-on-reporting-and-writing-information-about-vulnerabilities/privately-reporting-a-security-vulnerability)).
+
+If you prefer to submit via direct communication, you can send an email to [the lead maintainer](https://mailhide.io/en/e/Wno7k).
+
+You should receive a response within 48 hours. If for some reason you do not, please follow up via email to ensure we received your original message. 
+
+Please include the requested information listed below (as much as you can provide) to help us better understand the nature and scope of the possible issue:
+
+  * Type of issue (e.g. buffer overflow, SQL injection, cross-site scripting, etc.)
+  * Full paths of source file(s) related to the manifestation of the issue
+  * The location of the affected source code (tag/branch/commit or direct URL)
+  * Any special configuration required to reproduce the issue
+  * Step-by-step instructions to reproduce the issue
+  * Proof-of-concept or exploit code (if possible)
+  * Impact of the issue, including how an attacker might exploit the issue
+
+This information will help us triage your report more quickly.
+
+## Preferred Languages
+
+We prefer all communications to be in English.
+
+## Policy
+
+We follow the principle of [Coordinated Vulnerability Disclosure](https://aka.ms/security.md/cvd).