A Sprint contractor left thousands of US cell phone bills on the internet by mistake
https://techcrunch.com/2019/12/04/sprint-contractor-cell-phone-bills-exposed/
A contractor working for cell giant Sprint stored on an unprotected cloud server hundreds of thousands of cell phone bills of AT&T, Verizon and T-Mobile subscribers.
The storage bucket had more than 261,300 documents, the vast majority of which were phone bills belonging to cell subscribers dating as far back as 2015. But the bucket, hosted on Amazon Web Services (AWS), was not protected with a password, allowing anyone to access the data inside.
