Popup - https://security-updates.b-cdn.net/ld1/update.html?subid=1&cnv_id=DSa9uC4AA87vdoEH5Dy1BH
Requires users to install a "security update" through Windows app installer. It is deemed as "suspicious" on VirusTotal.
https://www.virustotal.com/gui/url/ed0b234a9fcea45753b1f1b4651c4eb6ebf0231fac7354c486ef40da671706b5/detection