Introduces a paragraph on the Security Contacts page encouraging
community contributions to the document, guiding users to raise issues
or pull requests via the project's Git repository or direct contact.
This change aims to enhance collaborative development and transparency
around the security documentation process.
Introduced a dedicated security contact page for Private.coffee,
enhancing our communication channels for reporting security concerns.
This includes clear instructions on how to reach out via email, the
provision of a PGP public key for encrypted communications, and an
alternative contact method via a Matrix room. The creation of this page
underscores our commitment to security and provides our users with
multiple avenues to responsibly report security issues, ensuring swift
action and transparency in handling such matters.
