Some infos:
https://plus.google.com/collection/E_NbaB
https://www.reddit.com/r/Android/comments/4t381f/go_dev_team_resorting_to_fake_virus_alert_ads
https://productforums.google.com/forum/#!topic/adsense/G-U6B1tDR-o
https://productforums.google.com/forum/#!msg/adsense/P9wX-YjD6AM/TzAwfgK4BQAJ...