No, that's not blackmail. You can only blackmail through exclusive knowledge. If they tested your code, then I'll assume your code is out there in the open, so

No, that's not blackmail. You can only blackmail through exclusive knowledge. If they tested your code, then I'll assume your code is out there in the open, so anyone can run your code through a static analyzer and write a blog post about it. Yes, these posts are advertisements for PVS-Studio, and since they frequently land on HN, they obviously work for them. Besides, you don't even have to buy PVS-Studio, since the Demo already will show you the complete analyzer output, you just won't be able to directly jump to the source.