Pokemon Go has full access to your Google account, says Niantic developer. The app can read and modify nearly all information in your Google Account. This is a huge security risk. Ive revoked their access to my account, and deleted the app. I really wish I could play, it looks like great fun, but theres no way it’s worth the risk. I’ve revoked the app and deleted it from my account. I’ve also posted responses to some FAQs in a post here.”]
Source: https://adamreeve.tumblr.com/post/147120922009/pokemon-go-is-a-huge-security-risk