I remember an old slashdot thread about a pedophile who took pictures of his victims and then tried to obscure it by swirl-distorting the faces. Police were abl

I remember an old slashdot thread about a pedophile who took pictures of his victims and then tried to obscure it by swirl-distorting the faces. Police were able to sufficiently unswirl the faces and identify the victims and get a conviction. The comments were all like, “well, duh you have to use a randomized Gaussian blur to make it irreversible”. “Yeah or black out the faces entirely.” Finally someone said, “right. Or, you know, you could just not molest children.” Edit: this might have been it but I remember a more involved thread: https://slashdot.org/comments.pl?sid=321921&cid=20908895 https://slashdot.org/comments.pl?sid=321921&cid=20908895