卡片背面的后三位数字 Card signature number
如果你现在还没听说过Mifare Classic，伦敦地铁公司的生蚝卡背后的RFID（射频识别）技术，同样也是波士顿及荷兰的交通运营商使用的技术，现已失密。
If you still haven’t heard by now, Mifare Classic, the RFID technology behind the Oyster Card in London, as well as by other transit operators in Boston and the Netherlands, have been compromised.
这一扩展背后的基本思想是计算文件中的行数和参数个数，并在文件属性页的新选项卡中报告结果。
The basic idea behind this extension is to count the number of lines and characters in a file and report the results on a new TAB of the file properties page.
邀请背后的主使者自称“玛拉卡”(希伯来文中的“天使”之意)，类似于《达芬奇密码》中那个特立独行，狂热怪异的恶棍僧人赛拉斯。
The person behind the invitation calls himself Mal 'akh (Hebrew for "angel"), a villain as unique, zealous and bizarre as the monk Silas in the Da Vinci Code.
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