Merchant Support Center

Want to discover more about payment types and how you can reduce fraud losses? Wondering what the difference is between on-line and off-line debit? You can learn about these things - and a whole lot more - in our Merchant Account Support Center, a set of tips and links to information designed to help you work smarter and safer.

We want to hear from you
If you are a current merchant looking for Customer Support, contact us online or toll-free at 1.800.934.7717. If you are a new customer needing to speak to a sales representative, fill out our form, or call 1.800.708.3740.

The Merchant Support Center is organized by topic, to make it easier for you to find what you are looking for. Simply click on the links below to visit the areas that interest you most.

Fraud
	Partners in PCI Education: A Chase Paymentech and MasterCard Case Study
	Fraud Alert - Key Logger Attacks
	Critical Security Information Alert
	Data Security Alert - Visa's Compliance Acceleration Program
	Strategies for avoiding fraud in a point-of-sale environment
	Strategies for avoiding fraud in a card-not-present environment
	Card Brand Data Security
	AVS Response Codes
	Card Security Codes - CVV2, CVC2, CID
	Terminal Fraud Protection
Chase Paymentech News Flash
	Unlawful Internet Gambling Enforcement Act - Effective December 1, 2009
Triple Data Encryption Standards
	Triple DES Frequently Asked Questions
	POS PED Frequently Asked Questions
	Compliant Point-of-Sale PIN Entry Devices (POS PEDs)
Card Company Alerts
	Data Security Alert - Visa's Compliance Acceleration Program
	Visa Data Security Alert (Packet Sniffing Vulnerabilities) - February 2, 2009
	Visa Data Security Alert (Malicious Software and IP Addresses) - January 29, 2009
	Visa Data Security Alert (Hospitality Merchants) - January 9, 2009
	Visa Data Security Alert (SQL Injection Attacks) - October 10, 2008
	Visa Data Security Alert (Key Logger Malware) - October 6, 2008
	Visa Data Security Alert (Debugging Software - Memory Parsing Vulnerability) - October 2, 2008
	Visa Data Security Alert (Eliminating Storage of Prohibited Cardholder Data) - September 3, 2008
	Visa Data Security Alert (Network Vulnerabilities) - June 19, 2008
	Visa Data Security Alert (Improperly Secured Wireless Networks) - October 5, 2007
	Visa Data Security Alert (Default Settings and Passwords) - May 9, 2007
	Visa Data Security Alert (Improperly Segmented Network Environment) - October 31, 2006
Account Truncation
	Account Number Truncation Rules
	Frequently Asked Questions
Chargebacks and Retrievals
	The most common reasons retrievals and chargebacks happen
	Tips for preventing chargebacks
Payment Processing
	What is interchange and how does it work?
Payment Methods
	What are some payment methods available to my business?
	What are stored value gift cards and why should I want them for my business?
Helpful Links
	Links to Card Brand Companies