Encouraging whistleblowers can stop frauds , so the belief goes .
人们似乎相信，鼓励告密可以防止欺诈。
Some of these companies may be outright frauds .
其中有些公司可能纯粹是骗子公司。
Frauds involving bank confirmation are neither new nor limited to china .
银行确认环节涉及的欺诈现象在中国并不新鲜，也不仅限于中国。
Short-sellers have a powerful argument in their defence : who else has an incentive to spend millions of dollars uncovering frauds and letting the air out of bubbles ?
做空者有充足的理由为自己辩护：除了他们，还有谁会有兴趣动用数百万美元揭露欺诈行为，把空气挤出泡沫？
Many should not have been allowed in , and there has been a predictable rash of frauds and governance problems .
