Earlier quoted context omitted.
I really can't see how this is unethical or immoral in any way.
You don't see anything unethical or immoral about telling a company "I hacked your systems, send me money or I'll delete all your data"? It's obviously a crime.
I do, however loup-vaillant's post also contained the following, which makes it not immoral nor unethical:
> accessed and modified , using . You have
Also, you need to panic them, you do not necessarily need to delete or copy their data (but even if you did, I see nothing evil in it. They are the ones that refused to fix it within the time given after all).
> It's obviously a crime.
Doesn't mean that it's immoral or unethical.