Google has started sending notifications to those affected by it error in Google + API which was revealed in December 2018. H notice contains details about which data of profiles were exposed, but also which apps had access to them.
On 10 December 2018, Google announced that a bug in the Google + API allowed applications to allow users to view private data on their profile that they normally should not have access to.
According to the company's announcement, this error affected over 50 millions of users.
As of last week, Google+ users affected by this particular bug started receiving alerts from Google that report which profile fields were exposed and which applications accessed them. The fields exposed as well as the implementations are in an attached file called app_details.csv, in accordance with bleepingcomputer.
The company has already decided to terminate the Google + social service in August of 2019 due to its non-interest from users but also one previous error in the API that leaked personal information from 500.000 Google+ accounts.
With the unveiling of the second bug in the API in December, Google has decided to close the service against "headaches, headaches." 2019.