How do I become a 3D secure merchant? Thaabit Mollagee October 05, 2016 12:01 Updated Follow You can simply request that your Merchant Bank to enroll your merchant account for 3D Secure. Once this process has completed MyGate will conduct 3D Secure testing. Once a successful result has been attained your account will be enabled for 3D Secure. Comments 0 comments Article is closed for comments.