von Ahn博士说:“如果一个司盘客获取一个邮箱账号得到的钱少于千分之三美元,那么验证码系统的效果就恰到好处了。”
“If the benefit a spammer is getting from obtaining an e-mail account is less than $3 per 1,000, then CAPTCHA is doing a perfect job,” says Dr von Ahn.
2007年初,黑客侵入他们的账号,并将剩下的26500美元从贷款账号转移到他们的经营收支账号上。
Hackers tapped into their accounts in early 2007 and directed that $26, 500 from the credit line be placed in the business account.
他们公私账号并用的做法一年之后给他们带来了困扰:电脑黑客侵入系统,将27000美元转出,这笔钱动用法律手段也无法追回。
Their commingling came back to haunt them a year later after computer hackers transferred nearly $27, 000 to unknown points beyond the reach of the law.
And with this data, where students were able ; to implement last year their own E-trade-like website; whereby you have accounts and you log in your hand age of your users 10,000 virtual dollars and with them can they get stock quotes, by stocks, sell stocks and the like, all of this accomplished just after a few weeks time.
通过这些数据,学生们就可以做出类似电子商务的网站;,只要你有账号就能进入你的账户,里面有1万的虚拟美元,这样你就能去查询股票报价,进行买卖股票之类的事,这一切仅仅用了几个星期的时间就完成。
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