Operation Morning Crest was a mission of Imperial Intelligence that Keeper supervised in 3645 BBY. This operation took place during the Cold War against the Galactic Republic. Intelligence considered the happenings of this mission to be highly unusual. It wasn't until four years had passed that they determined the Star Cabal had a hand in the operation. This led to understanding the meaning of a recording that was unintentionally intercepted during the mission. The recording contained a message from Hunter to her Star Cabal leaders, where she reported that she had successfully infiltrated the Republic Strategic Information Service.
The first reference to Operation Starbender was in Keeper's bio on the official Star Wars: The Old Republic website. The Imperial Agent quest "The Hidden Throne" provided more details.