3 ms·

This does not affect the collecting website's security or revenue in any way. They don't care. They don't do this for their own security. They do it because

• smeej 3y ago
  An awful lot of websites do have their revenue affected. Cryptocurrency exchanges, for example, need to know if an account belonging to some random innocent person is being linked to their account by someone impersonating that person, because if they accept payment, issue the cryptocurrency, and the fraudster withdraws it, the owner of the bank account will reverse the charge, their bank will recall the funds from the exchange, and the exchange is left holding the empty bag. I've worked in this field specifically for most of the last 7 years. It's a problem on the order of tens to hundreds of millions of dollars annually if you get it wrong.