Data transfer from client side JIRA on premise

[jay januar]

my organisation is pretty conservative and risk averse. We are going to host JIRA in a server that does not have internet connection. However, the client that would access the server has an internet connection. The question is, are there any client side data push to external via internet in JIRA? (eg: ajax javascript post to atlassian server or third party server  which would push the user story that may have sensitive personal data). Thanks.

[Joe Chlimoun]

Disable gravatar... Shouldn't be any data exchange between the server and gravatar, but it would embed html for the browser to send user email address to the gravatar server to pull an avatar.