I received the Oreo update this morning on my Samsung Galaxy S7. Afterwards, I also updated some of my existing applications via Play Store (no new applications were downloaded, just updated.) Since this morning I now receive pop up ads on my phone about every 3-5 minutes. I have updated the app notifications and even went into Chrome settings and disabled pop-ups. I can't seem to figure out where or what app is causing the ads, but it's exhausting and frustrating. Any one else seeing a problem after the update, or perhaps with a particular app? (FYI - It's not Facebook - I haven't updated that.)