又把 Log 看一遍，看的时候注意到，每次来自这个 MAC 的 DHCP 请求出现的前后，都有 MAC 10:4f:a8 开头，来自我的 SONY Android 电视机的 DHCP 请求。这台电视机买来后一开始用的是 WLAN 联网，后来我觉得信号不好，当天就把 WLAN 关闭后用网线直接连接了。之前是有遇到过偶尔 WLAN 自己打开的情况，难道这次也是这个原因？
打开电视机，进入网络状态查看——咦，只有 LAN 的信息。大概是插着网线的关系，把网线拔掉后，就可以看到 WLAN MAC 地址了——还真的就是它！
有时候的确不能完全靠 MAC 地址来判断。就和我的笔记本一样，LAN 是品牌机厂家的 MAC 地址，而 WLAN 就是 Intel 的 MAC 地址。因为这台电视机的 WLAN 就用过那么一小会儿，所以我也对 WLAN 的 MAC 地址没有印象。前面看到个陌生的设备还以为网络被黑了，虽然怀疑过电视机，但是先入为主的认为 WLAN 的 MAC 也应该是 SONY 的——然而并不是。这么说来这台电视机很可能是 Foxconn 代工的咯？
Last weekend was definitely not a normal weekend. The flare out of the computer worm virus WannyCry screwed lot of people’s weekend. It’s been quite long since last mass computer virus outbreak which I can remember was the Blast worm virus back in 2003.
The virus takes advantage of the exploit MS17-010 in Windows’ SMB server, it use port 445 to get control of an unpatched computer, and then use this computer to infect more computers on the network. This time, the exploit affects almost every PC running Windows.
Especially for the PC still running outdated version like Windows XP which is widely used in my local banks, companies, stores, gov departments …, etc. Microsoft released a patch for these end-of-life OSes on May 12th, which is very unusual. Continue reading Wanna Cry?
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