> For the complete documentation index, see [llms.txt](https://docs.f5ezcode.in/cs-basic/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.f5ezcode.in/cs-basic/di-wu-zhang-it-ni-gen-mo-sheng-ren-zhi-zhi-ge-liu-ren.md).

# 第五章－IT 讓你跟陌生人之間只隔六個人

- [5.1 為什麼網址開頭都是 www ？](https://docs.f5ezcode.in/cs-basic/di-wu-zhang-it-ni-gen-mo-sheng-ren-zhi-zhi-ge-liu-ren/5.1-shen-zhi-du-shi-www.md)
- [5.2 餅乾(cookie)出賣了我們的隱私, 但你可以這樣做...](https://docs.f5ezcode.in/cs-basic/di-wu-zhang-it-ni-gen-mo-sheng-ren-zhi-zhi-ge-liu-ren/5.2-qian-cookies-chu-le-wo-de-si-dan-ni-ke-yi-zuo-....md)
- [5.3 小心你的資訊安全與駭客入侵！](https://docs.f5ezcode.in/cs-basic/di-wu-zhang-it-ni-gen-mo-sheng-ren-zhi-zhi-ge-liu-ren/5.3-liao-de-zhi-gao-shi-you.md)