The android is also the easiest character to justify having his brain hacked by something.
I don't know about that. They actually hammer home the telepath possession pretty hard on TNG too. Clues, Power Play, Eye of The Beholder, & Man of The People, are all situations where Troi had her consciousness hacked, (Though Power Play had as little to do with her telepathy as it did Data's programming, since O'Brien got possessed too) Also, in the case of Night Terrors, her subconsciousness got hacked. Plus, there was the weird-assed rapey thing in Nemesis.
Honestly though, after all the ways the biological lifeforms get mind-jacked, it by far outdoes any of the number of ways Data got hacked. The Inner Light, Frame of Mind, The Mind's Eye, The Battle, Eye of the Beholder, Night Terrors, Sub Rosa, Conspiracy, The Nth Degree, Attached, Clues, Power Play, Man of The People, The Game, Violations, Nemesis, The Best of Both Worlds, & arguably Conundrum, if you want to think of memory erasing as a mind-hack, which is apparently something even Starfleet knows how to do from time to time, like in Pen Pals. Clearly, cerebral mind control is far more commonly achievable than positronic, & that's not even counting the wide array of ways a Q can screw with your head, like Amanda Rogers did to Riker in True Q. Did I miss any? lol
Data only got hacked about as many times or in about as many ways as the Enterprise herself, Descent, Brothers, The Schizoid Man, Power Play & Masks, and all but 2 of those took the 3 best cybernetic minds in existence to achieve it without some strange anomalous thing being involved.