FUYUTSUKI:“I have already handed the data over to Ikari.”
Dr. Nick: Fuyutsuki was about to go all whistleblower on Seele. Did Yui recruit him into her anti-Seele operation in order to save his life, as he would've surely been quickly snuffed out if he tried to go public with what he knows?
UrsusArctos: Given his flippant response to the incriminating material, I suspect Gendo simply used it as bait for Fuyutsuki and collected it himself afterwards, without Yui being involved.