These days there are a lot of folks scanning for open cloud storage folders online, and there is a huge amount of data being left lying around for anyone to find. Amazon has tried to help its customers secure their bit silos, but no one seems to be paying any attention.
We see so many services that don't actually delete your personal and/or payment information when you leave the service, drop from paid to free accounts, or the service ceases to function. Deletion is more expensive than storage. Likely your ass(et) is hanging out already.