At least two major credit card companies and four of the top ten U.S. banks have bought phone-encryption software, a security firm representative told Fortune.

至少有两家主要的信用卡公司，以及四家美国排名前十的银行都购买了手机加密软件。

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Study on the credit risk of listed companies is of important practical significance to security market supervision, to investor's interests 'protection and to credit organization's risk control.

研究上市公司的信用风险问题对证券市场监管、投资者利益保护以及信贷机构风险控制都具有重要的现实意义。

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And so it goes: Businesses worry about miffing their dealers, consumers worry about the security of their credit cards, media companies worry that selling goods will compromise their credibility.

FORBES: World Weary Web

However, security concerns and a lack of consumer interest led credit card companies to deem the benefit of the technology not worth the cost of equipping cards.

FORBES: Have We Seen The Last Of Credit Cards As We Know Them?

Mike Smart from cryptography specialists Safenet said that many companies were only applying their highest security protocols to data such as credit card numbers.

BBC: Sony investigating another hack