I think the problem comes down to this: Phil is a career liar, he leaves information ambiguous, and deliberately obscures what he's revealed in the past. This gives people a mystery to solve. It's enticing, it appeals to the deep human desire to discover truth. It's what leads Windows-using, computer illiterate fools like myself to dig through King County Property Tax records. Worse for Phil, there are even those that will take this desire to uncover his enticing secrets to humiliate him. "Using my own abilities, I've pulled down your facade, and exposed you for what you are".
I don't think Kat here is the "target". She's merely a means to an end. Phil has revealed enough of Kat's background to entice, but not enough to satiate curiosity. This exposure is the natural conclusion.