Ethics in security research which lines should not be crossed?

Recently, several research papers in the area of information security were published that may or may not be considered unethical. Looking at these borderline cases is relevant as today's research papers will influence how young researchers conduct their research. In this paper we discuss fundamental ethical principles and their role in recent literature.We argue that the establishment of ethical guidelines or frameworks without prior discussion and consensus in the research community probably would not lead to clarity on which lines in academic research should not be crossed.