Board Thread:Roleplaying/@comment-29461586-20150326131815/@comment-29461586-20150331143148

The Imperial Palace's security considerably increased, along with the installation of new soul gem defenses, which were made to attack hostile trespassers. They were specially attuned by Luciana herself, so the only real problem of the gems were either they ran out of charge or were looted for their value as enchanting materials.

http://tes-sandbox.wikia.com/wiki/Thread:81622