Asian sounding woman calling from "windows consumer support". Said she got my number from the yellow pages/white pages and that they were calling windows users in my area because there were reports of malicious files being unknowingly downloaded when users went online. Probed to find out when the last time I went online was. Informed her that this call was very invasive and I don't want to receive a call like this again. Specifically asked to be put on the "do not call list", not that that seems to mean anything anymore since all these spam calls come from spoofed numbers and there's no way to punish the perpetrators.