An issue was discovered in the GAEN (aka Google/Apple Exposure Notifications) protocol through 2020-09-29, as used in COVID-19 applications on Android and iOS. It allows a user to be put in a position where he or she can be coerced into proving or disproving an exposure notification, because of the persistent state of a private framework.

An issue was discovered in the GAEN (aka Google Apple Encounter Notification) protocol through 2020-08-27, as used in Corona applications on Android and iOS. It allows a user to be put in a position where he or she can be coerced into proving or dis-proving an encounter notification.