The @bucketchallenge was on the 38C3 and talking about open S3 buckets and their scary content:
The talk ist available:
- In German: https://media.ccc.de/v/38c3-projekt-bucketchallenge
- With English translation: https://media.ccc.de/v/38c3-projekt-bucketchallenge#l=eng
But the most shocking thing he talked about: how difficult it is to get someone to care about innocent peoples data.