[WanderingMinstrel]

Since last week, every afternoon, I've started getting spam notifications preceded by a green plus sign telling me to download various questionable apps and services. Obviously it's potentially dangerous stuff and I'd never click on anything from an unknown source.

But does anyone know where it's coming from and/or how to get rid of it -- other than clearing the notifications queue each time?

The messages only show up in the notifications pulldown. They are not coming in via messaging or SMS or GV.