Mass Effect Edit
Chorban and his partner Jahleed stole the plans for an advanced medical scanner from the company they were working for. They reconfigured them to scan the keepers. Chorban is very interested in learning more about the keepers, since very little is known about their activities and how they accomplish them. However, though he does not believe his scanner disturbs the keepers, he is hesitant to continue his research overtly, lest the authorities take a dim view of his curiosity in the creatures. Commander Shepard can volunteer to continue the research, and later help Chorban's colleague, Jahleed, in his conflict with the salarian.
Mass Effect 2 Edit
If Shepard did not kill Chorban in 2183 and scanned all or most of the keepers, he will contact Shepard via email to give the Commander a summary of his findings: