Most clients check out by credit card, traveller's cheques or Master card.

多数顾客用信用卡、旅行支票或万事达卡结账。

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Customer information might be stored in a customer master data management system, or multiple repositories, and credit card transactions might be stored in another data source.

客户信息可能存储在客户主数据管理系统或多个存储库中，而信用卡事务则可能存储在另一个数据源中。

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It works by detecting when a botnet virus is communicating with its master servers, as it must do to get its commands or to send back data — say, your passwords and credit card Numbers.

由于僵尸网络病毒必须与主服务器通信来获得命令或返回数据——比如，密码和信用卡号码，通过侦测此过程该技术便能发挥作用。

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If outsourcing call centers cut costs for American Express (NYSE:AXP), it also does for its credit card competitors Visa (NYSE:V) and Master Card (NYSE:MA).

FORBES: The Unintended Consequences of Outsourcing