All you can find out from station records is that he had a clean slate, was a skilled mechanic, and always made fantastic meals for company picnics to the First Forest of Garel.
Any answers in that direction most probably lie on Garel itself.
The results of the systems check are coming back. It seems the attacker sabotaged the processing process of the gas mining. The way it is currently configured, reactivating the gas processing procedure would simply ignite all gas stored in the station and the containers would explode, taking out the station. It seems Jedi intervention stopped the attacker from completing his scheme!
They have brought the comms back online and also the sensors... which are reporting that a starship is moving away from the station.