We sent out an email last month to all our SIMGenealogy users to update to the latest SIMGenealogy version 2.1.8 as there was a security vulnerability, and here's a post just in case:
This is a security release for the SIMGenealogy. This release fixes a critical level security issue.
You can update to the latest version either through the Joomla Update Manager in your website's backend, or download the latest package here.