(contributing:security)= # Reporting security issues in Jupyter or JupyterHub If you find a security vulnerability in Jupyter or JupyterHub, whether it is a failure of the security model described in [Security Overview](explanation:security) or a failure in implementation, please report it! Please use GitHub's "Report a Vulnerability" button under Security > Advisories on the appropriate repo, e.g. [report here for JupyterHub](https://github.com/jupyterhub/jupyterhub/security/advisories). You may also send an email to , but the GitHub reporting system is preferred. If you prefer to encrypt your security reports, you can use {download}`this PGP public key `.