I also get these. One is an "Urgent Chrome Update" that looks like something from Google, but actually has a different web address. Sometimes I get a pop-up on my phone that says I won a $1,000 gift card, but the "Visa" one is "out of stock" and when you click on the Amazon one it says "Sorry, this item is also out of stock."
Also, the gift card one has comments that the date changes, but none new are ever added and they never change otherwise. I'm using Chrome also.
ETA: Also, I have Kaspersky AntiVirus, though it ran out and I started getting those. Now that I have it again, they still pop-up.
Leviathan, Zephyr, Creamsicle, Hades, Helios, & Sonic
SIP Kamikaze, the first Import.
Yasei, Freedom II, Kettei, Kitti, Kestrel, & Karma (+2 incoming imports)