Study Guide
Table Of Contents
- PayPal Certified Developer Program Study Guide
- Contents
- List of Tables
- Online Payment Processing
- Internet Security and Fraud Prevention
- Why Every Business Should Be Concerned About Internet Fraud
- Liability for Internet Fraud
- Internet Fraud: What It Is and How It Happens
- Who Is at Risk for Online Fraud
- Reducing Exposure to Fraud
- What Banks and Card Associations Are Doing to Prevent Online Credit Card Fraud
- What PayPal Is Doing to Protect Your Business Against Fraud
- Disclosure and Compliance
- PayPal Fraud Protection Services
- Review Questions
- Getting Started With Account Setup
- API Credentials
- Name-Value Pair (NVP) API
- Express Checkout
- Direct Payment API
- Transactions
- Sandbox Testing
- Answers to Review Questions
- General Reference Information
- Glossary
- Index
PayPal Certified Developer Program Study Guide March 2008 157
G
Glossary
A
Address Verification System (AVS) — A system used to verify the identity of a credit card
holder.
API certificate — A file (downloaded from PayPal) that includes a key and certificate that
identify a developer. An API certificate must be installed on a web server; therefore, it is an
option only if the developer has full control of the web server.
API credentials — A set of data that uniquely identifies a developer to the PayPal API server.
The credentials are attached to every API call.
API password — This is automatically generated and assigned by PayPal. It is a randomly
generated string of 16 characters.
API signature — An encrypted string value included with each API call.
API username — This is assigned by PayPal. Although the API username is based on the
email address used to set up the credentials, it is not the same as the email address used to log
in to the PayPal website
Authorization & capture APIs — A PayPal payment solution that separates the authorization
for a purchase from the actual capture of the funds. This is useful for merchants who have a
delayed order fulfillment process or who need to modify the original authorization amount due
to order changes.
C
Case — A claim registered with PayPal by a buyer who has a dispute with a merchant.
Chargeback — A transaction in which a customer requests a refund from the credit card
company, and the credit card company bills the merchant. Chargebacks often occur as a result
of fraudulent transactions or disputes in which the customer was not properly credited after a
return.
Card Verification Value (CVV2) — A three- or four-digit value printed on a credit card but not
encoded on the card’s magnetic strip. This value provides security against credit card fraud in
transactions in which the merchant does not directly handle the credit card, such as e-
commerce transactions.
I
Instant Payment Notification (IPN) — A PayPal solution that provides merchants with
immediate notification and confirmation of PayPal payments received.