Conman's Conscience is the name I have for those situations when a person or a business justifies itself by saying "it's your own fault". People who sell pictures of iPhones on eBay claim their victims didn't read carefully, so it's their own fault. An internet service provider that doesn't upgrade their customers to new, cheaper, better versions of their plans automatically says its their own fault for not checking regularly. If you're exploiting your customers in any way and justifying it by saying they should have known better, you've got Conman's Conscience.
Mokalus of Borg
PS - Most privacy invasions online fit in this category.
PPS - And, of course, all cons, short or long.