Gone through three technical and one Director round. Technical questions are moderate in difficulty and mostly based on malware research. Director round contain questions like, why Microsoft? You may face very dumb questions here. Hiring process of Microsoft is more pathetic then startups. The hiring team will not contact or respond to your queries once, even if you get selected. In my case, I got the confirmation email that I got selected for the role, but then never received any further call or offer letter.