1、如果黑客给我发了一封邮件，我不小心打开，但里面没有什么链接，就是几个字母。如果我没回信，只是打开邮件，黑客能因此得到我的IP地址吗？
Probably not if you didn't click any link or attachment inside the email.
2、是不是得到我的IP地址就可以入侵我的电脑了？如果答案是肯定的，我该怎么办？
No.
3、前些日子一台电脑中木马病毒，被杀除。还有什么隐患或漏洞，我需要注意？
Your PC should be ok If it's removed.
4、是不是家里每台电脑的IP地址都不一样？还是都一样（用同一网络）？
To the external world, 家里每台电脑的IP地址都一样. Inside your home network, 家里每台电脑的IP地址(private IP)都不一样. Your home router is doing the external IP address to internal private IP address translation. The external IP address is assigned by your ISP like ATT, Verizon, Comcast etc. The internal used private IP addresses are assigned by your router.
5、如果不换网络，怎样才能换一台电脑的IP地址？
The external IP address assignement depends on your ISP. You'll get a new external IP address if you turn of your modem for a few hours or even a day, depending on your ISP.
Possible.
