Chrome 69s Sync Controversy, Unacceptable as per World Renowned Cryptographer Matthew Green. Google is in the middle of a non-disclosure controversy with how Chrome 69 changed the behavior of the Chrome Sync feature. Chrome Sync is a browser feature that synchronized history, bookmarks, cache and other browser data to the cloud for ease of use and convenience. However, even with Chrome Sync existing for many years, not everyone is taking advantage of such a feature due to privacy concerns. Google on their part, Adrienne Porter Felt tried to calm people down via the Twitter post below.”]