DefenStar Ltd. was a planetary defense system manufacturing corporation, known for producing planetary shields, including the customized interlocking system used by the Imperial Academy. DefenStar was rumored to be duplicating the interlocking shield system at an unknown location, believed to be in the Deep Core. DefenStar was a contributing sponsor of the Corporate Sector Authority. They manufactured the Nyalsan II Planetary Shield.
- Han Solo and the Corporate Sector Sourcebook (First mentioned)
- Pirates & Privateers
- Hideouts & Strongholds