黑帽骇客会迟疑参加这样的竞赛，他们担心自己被公众认识。要发现他们有其他的方法。
Villains with those nefarious aims - "black hats" -would hesitate to enter such a contest, for fear of breaking cover; there are other ways to detect them.
这类被称为“骇客”或“黑帽”的黑客遍及互联网，专门利用电脑系统为非作歹。
The Internet abounds with4) hackers, known as crackers or "black hats", who work to exploit computer systems.
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