A few years back i used to work for a porn company and they are not.
There is an old protocol still creeping around smartphones known as WAP Payment (yes that WAP) which was/is used to buy stuff on the mobile web and the purchase shows up on your phone bill.
They buy all type of mobile ads (banner, text, popup, modal, etc.) and when you open the ad you get billed 4€, 5€, 6€ per week or month, without any confirmation whatsoever. Some phone carriers ask for user input (mostly the user has to click a button "I agree") but that's where click-jacking, CSRF and other kind of exploit comes in, very few ask for a confirmation code.
The sad thing is that they know, the carriers know but they don't care, until enough people complain about it then they shutdown the service to that website for a few days (in some cases they shut it down permanently) but they always come back online.
There is an old protocol still creeping around smartphones known as WAP Payment (yes that WAP) which was/is used to buy stuff on the mobile web and the purchase shows up on your phone bill.
They buy all type of mobile ads (banner, text, popup, modal, etc.) and when you open the ad you get billed 4€, 5€, 6€ per week or month, without any confirmation whatsoever. Some phone carriers ask for user input (mostly the user has to click a button "I agree") but that's where click-jacking, CSRF and other kind of exploit comes in, very few ask for a confirmation code.
The sad thing is that they know, the carriers know but they don't care, until enough people complain about it then they shutdown the service to that website for a few days (in some cases they shut it down permanently) but they always come back online.
P.S. this is a throwaway account