The Gridcoin community as of mid August has approximately 12k registered users in team Gridcoin, with approx 3k actively crunching. These users are spread across many platforms such as:
If you're looking to report security concerns:
If you have non-critical Gridcoin client issues/bugs you wish to raise awareness of then please submit an issue on the GitHub repo.
If you're interested in collaborating towards Gridcoin's future development then don't hesitate to join Slack/Telegram/Discord/CryptoCurrencyTalk/GitHub to begin working with others on your ideas.