Just a quick tip.
On the quest "Allegiance" for the Empire on Korriban, you can scan the same initiate multiple times if he is not a traitor.
He will eventually be labelled as a traitor and you can kill him, so you don't have to find an extra mob if the one you scanned isn't a traitor
Allegiance - Missions - Star Wars: The Old Republic (SWTOR) Database
Is the quest.
Cheers