Mortal Online 2 by Swedish developer Star Vault, has been facing a series of server issues and security concerns recently.
Warhammer: Odyssey has been going through a little more than a rough patch over the past week. The Discord has been updated with news that the game, as well as Virtual Realms' game Celtic Heroes have been offline due to a security breach. In addition to the massive security breach that has forced both games offline, worries that Virtual Realms has moved on from development of both of their titles, in favor of a new one, has forced a developer response to clarify their involvement on other titles