Correspondingly, how much of the Web is the dark web?
What we call the dark web is tiny. The World WideWeb has swelled to over a billion different sites, whilecurrent estimations put the number of Tor hidden sites at between7000 and 30,000, depending on what methodology you follow. That's0.03 percent of the normal web.
Similarly one may ask, is it illegal to be on the deep Web?
Due to the anonymity that Tor and such private browsersoffer, unfortunately, it is also a popular nesting ground forcriminal and illegal activity. While it is legal to accessthe deep web with a dedicated or anonymous browser, manywebsites on the deep web are not legal tovisit.
It was developed by the U.S. Navy for thegovernment in the mid-1990s. But it was open-sourced in 2004, andthat's when it went public. Tor is now the dark web browserthat the vast majority of people use to anonymously surf theinternet.