Being inundated with Robocalls, we look for apps that can block them. Serprize, serprize!!! We now find that the apps have been sharing (for a price, of course!) data with third-parties. (We, however, were not invited to those parties...)
Even robots can get caught with their hands in the cookie jar! (https://techcrunch.com/2019/08/09/many-robocall-blocking-apps-send-your-private-data-without-permission/)