Drain Knowledge

Drain Knowledge is a Dark Side ability used to extract knowledge out of a sentient without their consent.

More than a simple reading of thoughts, the Drain Knowledge ability disrupts the Force to steal deep memories and information in an often violent and merciless way. Such a process can damage the subject psychologically, depending on how strong the target's will is or how much effort the Darksider must do to break through mental defenses.

Particularly skilled users can sometimes bypass mental defenses entirely and steal information without the target even being aware of it. This usually only works if the subject is not very skilled in the mental realm.

=Sources=
 * Wookieepedia