Hello ACME Partners,
Given the recent increase in card phishing cyber attacks on some of our clients' native webpages, we now require that all custom API checkout flows incorporate a low development effort fraud prevention mechanism. This is in order to prevent the potentially large monetary costs caused by a cyber attack.
Please note that if ACME is your merchant of record, we will reserve the right to turn off the consumer checkout API traffic when an attack is detected in order to reduce the costs incurred by these attacks.
If you have any questions, please email firstname.lastname@example.org.
Please use the following API documentation for additional technical information on the type of attacks being prevented: Checkout APIs - Best Practices and Security
You can read more about ACME's use of reCapcha here: ACME Security for Online Sales
The ACME Team