I am getting really tired of all these worshippers of the issur of mesira. Not because I minimize it, but because it has become a subject of lay people basically paskening whatever they want based on the concept. And this is with minimal to zero knowledge of the real parameters of this issur. I would ask anyone who is mouthing this stuff to please stop accepting the street version of mesira, open a Shulchan Aruch, and seek the guidance of a posek who is versed in the subject to provide guidance. Meanwhile, there is an unfortunate amount of “pilpul shel level” in earlier comments.
If people were only as careful to protect others from shame, and to promote Ahavas Hashem, we’d all be better off.