In the early days, public Wi-Fi networks often resembled the Wild West, where ARP spoofing attacks that allowed renegade users to read other users' traffic were common. The solution was to build cryptographic protections that prevented nearby parties—whether an authorized user on the network or someone near the AP (access point)—from reading or tampering with the traffic of any other user.
Наука и техника
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微软表示，一块 120mm 见方、2mm 厚的硅酸硼玻璃可存储约 4.8TB 数据，相当于约 200 万本印刷书籍的内容。团队在加速老化实验中推算，在 290℃ 条件下数据可保存 1 万年以上，而在室温下寿命将更长。
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