If there is log function inside the net, go commanding observation through ARP again, had discovered attack trace very hard.

如果网内没有日志功能，再去通过ARP命令观察，已经很难发现攻击痕迹。

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One afternoon, while attempting to get into bed she collapsed from what was eventually discovered to be a heart attack.

一天下午，当她试图上床时，她摔倒了，最终查明是因为心脏病发作。

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Military investigators later discovered a local police chief had helped carry out the attack.

随后调查人员发现当地警察参与策划了该袭击。

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The firm discovered the attack on October 14th, when the intruder created new user-accounts to gain even deeper access to the network.

ECONOMIST: Computer security: Worming out the truth | The

Hassell says he discovered the attack while working on a more benign app of his own: one that would create a child safety setting for Android phones.

FORBES: Researchers Show Android Vulnerable To App-Hijacking Attacks

Facebook, in a blog post, on Friday said it discovered the attack after finding a suspicious Internet domain in its computer logs that it traced to a single employee laptop.

WSJ: Apple Hit by Hackers Who Struck Facebook