Security: Braintree now offers 3D Secure 2.0 (3DS 2.0) to all users. 3DS 2.0 is the new industry standard for customer authentication, and it's nice to see it available here. In addition, Braintree uses data encryption to store information in the Braintree Vault, and Braintree is Level 1 PCI DSS compliant.
PayPal is an online financial service that allows you to pay for items using a secure internet account. You simply add your bank account, credit card or debit card details and whenever you pay using PayPal, you can can choose which of your cards or accounts it pays with.