Introduction

The deep web, invisible web, or hidden web

Fig. 1

Darknet is often confused with the Deep Web (or Deep net). While the Deep web is reference to any site that cannot be accessed through a traditional search engine, the Dark net is then a small and classified portion of the Deep Web that has been intentionally hidden and is inaccessible through standard browsers. Darknet与Deep Web经常混淆，Deep web泛指一切不能被传统搜索引擎发现的网站，Darknet是Deep web的一些部分，它被故意隐藏，普通的浏览器不能访问。

Fig. 2

Most of the web's information is buried far down on sites, and standard search engines do not find it. Traditional search engines cannot see or retrieve content in the deep web. The portion of the web that is indexed by standard search engines is known as the surface web. 大部分网络信息都深藏在网站，标准搜索引擎找不到他们。传统搜索引擎不能看到也不能从deep web获取信息。另一部分网络是可以在标准搜索引擎检索的，他就是surface web。

Safety precautions:

Dont trust anyone out there in the deep web.
COVER your webcam using tape.
Never download any files or software from deep web.
If you want some extra protection (or maybe) , type "about:config" in the address bar, scroll down to "Javascript_enabled" and change the value from "true" to "false"
Don't use Utorrent or any other torrenting services while surfing on the deep web.

TOR hidden service sites (.onion sites) are only a tiny part of the deep web.TOR隐藏服务站点（.onion站点）也只是deep web微小的一部分。