Download Visa and MasterCard critical bulletins click for PDF

Visa PCI DSS Compliance Validation Framework November 18, 2008

Visa USA Data Security Alert POS PIN Entry Device Vulnerabilities November 19, 2007

Data Security Brief for U.S. Financial Institutions POS and ATM Hardware 11/2007

Visa and Mastercard Interchange Rates

Download library

Visa comprehensive download library (official site)  includes:

E-Commerce Merchants’ Guide to Risk Management PDF | 1.7mb

PCI Data Security Standard

Take the Order—but Don’t Get Taken In PDF | 225k