We are starting to see brute force attacks come in through Link2pay, this may help to stop those.
We heard there were some brute force attacks to some businesses payment link (link2pay) sites. We have since added the newest form of CAPTCHA added to the bottom of our Payment Links. This same form can be found on many new sites to prevent fraud and only requests that the user checks the box to confirm that they are in fact human. This is backed by Google with a high level of security. Once your customer has checked this box they will then be able to click the blue Submit button at the bottom of the form to complete their payment.