From what I read of GD's issues ... managed (them) WordPress sites - attacker acquired credentials. Yep ... GD not known for moodle hosting ... but we do have a resident GD/Moodle user in these forums ... how about it Rick? Did you have any issues with your GD hosted Moodle? (Rick, however, doesn't use 'shared hosting' on GD so maybe he didn't have any un-pleasant experience.
Best of luck!
'SoS', Ken