Pop Ups

Getting these pop-ups the last few days. Seems like when I open the browser is when it happens, not
every time by any means, but about 3 times over the weekend. Anyone else ever see these and should I
be worried? I suppose I could run a virus scan. What is your favorite security app for android?

I didn't find the right solution from the Internet.

References: https://forums.androidcentral.com/verizon-htc-rezound/179748-congratulat...

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