AT&T continues extending its security system, adding new offers and most recently acquiring VeriSign's security consulting business. This ongoing investment is helping AT&T raise its global MSS profile and attract new accounts. This report contains insight and analysis of the product or service strengths and weaknesses, list of buying criteria and how the product or service fares in each category, and a comprehensive table of product or service metrics and specifications. This report is useful for purchasers who need to evaluate products, or as a source of competitive intelligence for vendors.