It's been for at least 2 months I've been tracking the origin of a redirector script to a fake/phishing site, and now I'm certain it's coming through the ads system in the outlook.com.
The script is redirecting to one of several pages, like:
https://prizemediayou.com/lands1/giphoogttesn/index.php?lpkey=15a7315589b430df88&uclick=fyy98wbz#
I know it's happening on the outlook.com site since I've replicated this behavior on freshly installed machines/VMs just by visiting the site and leaving the tab open for 1 or 2 hours.
Eset antivirus isn't recognizing the site as potentially hazardous (as of today).
Hope this info helps someone who has been redirected to this site lately.