My ex had that form of pop up happen… in her case, I believe it was associated to fb, nevertheless it was years in the past… All I do know is, If I can root my telephone, I do, and as soon as it is rooted I maintain a detailed eye on what tries to get superuser entry.
Satirically, if that is nothing greater than a scareware phishing advert and never the signal of an an infection, putting in a vpn that blocks advertisements on a server degree can do the trick in resolving the problem… I might not suggest any VPN that runs an advert like that although… Windscribe is my go to, expecially since they have a server facet answer that makes use of adblock lists, which, additionally works nice on the telephone as a result of I can play these ad-riddled video games and never fear about them having advertisements (principally)… granted, advertisements themselves are safety dangers regardless soo… it is best to keep away from ad-filled video games if potential, or, no less than solely play video games which use extra benign ad-services.