Is the person publishing this liable or just their source? Because this seems to be a hobby for the person publishing it and yet they also aren't concealing their identity. They list their former employer on their website.
Misappropriating trade secrets for financial gain is a punishable offense, and this data would qualify as a trade secret, at least for as long as it's not general knowledge to everyone or it has yet to be reverse-engineered. Aside from that, much of the data in these files has standard copyright and patent concerns.
OK then, out of curiosity, what are the relevant laws being broken here?
Copyright infringement probably works for them.
Wire fraud and, trade secrets acts are the two that are usually applied in these cases.
Wouldn't financial gain limit it to essentially their competitors? Which renders that part irrelevant and is kind of a "no shit" to anyone actually working in processors not to include their stuff in there.
Also: financial damage
Is the person publishing it or are they linking people to a place where it is published?
It seems that they are the ones publishing it, from the wording of the tweets.
More likely the person publishing this isn't aware of the far reaching consequences.
You should look up Till Kottman's other work. Very aware.