What is the Dark Web?

• • The dark web is a part of the internet that’s made up of hidden sites you can’t find through conventional web browsers.
  • The dark web is a small part of the internet about 5% made up of hidden sites that can only be accessed by the Tor Browser.

• Tor is a network of virtual tunnels that allows you to improve your privacy and security on the Internet. Tor Browser prevents someone watching your connection from knowing what websites you visit.

• Dark web sites use encryption software so their visitors and owners can remain anonymous—it’s why the dark web is home to so much illegal activity. However, this side of the internet isn’t reserved for criminals, many users browse the dark web every day for legitimate reasons also.

Surface web vs Deep Web vs Dark Web

Surface web

• The open web, or surface web, is the “visible” surface layer of the internet.
• All commonly public-facing websites accessed via traditional browsers like Google Chrome, Internet Explorer, and Firefox are contained here. Websites are usually labeled with registry operators like “.com” and “.org” and can be easily located with popular search engines.
• This collective of websites and data makes up under 5% of the total internet.

Deep web

• The deep web rests below the surface and accounts for approximately 90% of all websites.
• The deep web refers to hidden web pages that are not indexed by search engines. This lack of indexing is intentional on the part of many service providers, as it helps to protect private information.
• This part of the web contains everything from password-protected sites and data not accessible via public web pages to private intranets, academic content, and more.
• The dark web is a guarded subspace within the deep web, hosting encrypted websites that are accessible only via specific browsers. 
• This portion of the web is commonly associated with illegal activities such as arms and drug trafficking, scams, and espionage.

https://in.norton.com/blog/how-to/how-can-i-access-the-deep-web 

https://www.kaspersky.com/resource-center/threats/deep-web 

https://www.digitalguardian.com/blog/deep-web-vs-dark-web-whats-difference#:~:text=The%20deep%20web%20is%20largely,The%20Deep%20Web%20vs.