You have done an excellent job of revealing the very loose fabric of the internet, especially those that would not set their own security properly. However, under current law, you have violated so many laws, with so many more to come, that your best way out is to stand on the last iceberg in the Arctic and hope it does not melt anytime soon. Just to clarify, here's a few of the things you've clearly done, and I don't even have to prove them.
Access and distribution of pornography (surely one of those buckets was full of porn, a felony in 20 countries) Access and distribution of child pornography (well at least one of those buckets has it, or did, or will one day) Failure to report a bucket full of child pornography Conspiracy to distribute Hacking every country in the world... let me explain, no wait let me sum up. Amazon has storage in 193 countries By accessing one you have violated the statutes of every country attacked This is basically punishable by the rest of your life in prison in every country, except the Vatican, which will send you to hell. So now you are going to hell, after spending the rest of your life kissing bubba's pants Unauthorized access (fines from Amazon, billions $$$$ ($100,000 per bucket per country, ouch!) Future crimes (as the future is soon you are already guilty of: Discussing a hacking attempt Intent to hack Intent to exploit, list exploits, financially gain from exploits I can't type anymore, and there's no doubt as far as most governments are concerned I'm as guilty as you are by now.
The content owners granted access permissions to everyone by leaving their S3 buckets public; there's no way stumbling upon information made publicly available is considered hacking. Only the owners of these buckets could be convicted of anything, assuming stupidity is a crime.
"Well hello there Charlie Brown, you blockhead." -- Lucy Van Pelt