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What is the deep web? Everything you need to know in 2026

Many people have at least heard of the infamous dark web, but what exactly is the deep web? The deep web refers to parts of the internet that standard search engines can’t access, such as pages requiring login credentials like a username and password, or internal company networks. It can be hard to know whether this non-searchable section of the internet is safe, so we’re here to guide you. Read on to learn what the deep web is, how it works, what its benefits and disadvantages are, and how to access it safely.

Mar 27, 2026

8 min read

What is the deep web? Everything you need to know in 2026

What is the deep web?

The deep web is the part of the internet that search engines can’t index or display in search results. It includes content such as private databases, password-protected websites, academic resources, internal company pages, and subscription-only services.

What does the deep web look like?

The deep web looks like a normal part of the internet, but it includes sites you can’t find through search engines. It contains any website that requires login information, such as your email and banking accounts or subscription services like Netflix and Spotify. Web crawlers can’t index these sites, because they can’t log in, so they do not appear in search results. Dynamic websites are also part of the deep web, generating content in real time and showing different information to different users. Many people also use the deep web to access internal networks at work.

How big is the deep web?

The deep web makes up the vast majority of the internet. Its massive size comes from the enormous amount of unindexed data stored in private systems and databases. Examples include academic journals, medical records, government databases, private company networks, cloud storage, subscription-based services, and password-protected websites. Because search engine crawlers can’t access or index these areas, they remain hidden from regular search results.

Who created the deep web?

No single person created the deep web. The term describes unindexable internet content that developed alongside the growth of the World Wide Web, as databases, private networks, and password-protected pages became common online.

Computer scientist and consultant Michael K. Bergman is widely credited with coining the term “deep web” in 2001. He introduced it while studying how traditional search engines struggled to index large amounts of information stored in online databases and dynamically generated web pages.

What is on the deep web?

The deep web (also called the invisible or hidden web) encompasses parts of the internet that aren’t accessible through standard search engines, including content and services that require authentication or special access:

  • Personal emails.
  • Bank statements.
  • Medical records.
  • Cloud storage.
  • Subscription services.
  • Academic and government resources.
  • Corporate networks.
  • Dynamic content.

How does the deep web work?

The deep web works by hosting all web content that isn’t indexed by traditional search engines, including the dark web. Standard crawlers like Googlebot can’t access these sites because the data is available only to the account owner or an authorized user. The deep web operates through unlinked content, dynamic web pages, and password-protected websites, which include email services, banking platforms, and private databases.

Why isn’t deep web content indexed by Google?

Deep web content is not indexed by Google primarily because login screens, paywalls, and dynamic forms block its web crawlers from accessing or interacting with the content. Search engines create indexes by crawling and reading publicly accessible pages, which works on the surface web but fails on deep web sites. Users can navigate the surface web through hyperlinks, but Google can’t reach content hidden behind authentication or unlinked pages.

What are the benefits of the deep web?

The primary benefit of the deep web is privacy and data protection. Unlike the surface web, it helps ensure the security of your private and sensitive information. Your emails, financial records, and other confidential documents remain safe behind authentication barriers and encryption protocols. Other key benefits of the deep web include:

  • Secure transactions. Whether buying discounted items online or sending money to a friend, the deep web keeps transactions private and secure from third parties.
  • Confidential business operations. Companies can establish intranets and private databases, allowing employees to communicate securely and manage proprietary information and intellectual property.
  • Access to research materials. Academic and scientific databases, like JSTOR and Web of Science, as well as digital collections from universities and government archives are part of the deep web. These resources often require a subscription or institutional credentials.
  • Free speech. For journalists, whistleblowers, and people living under strict censorship or government surveillance, the deep web provides a way to communicate and share information anonymously.

What are the disadvantages of the deep web?

The primary disadvantage of the deep web is difficult access. Private databases and other parts of the deep web often require specialized knowledge and credentials, which can make it inefficient for everyday use. Other key disadvantages of the deep web include:

  • Security risks. Some areas of the deep web lack proper protection, putting you at risk of malware, ransomware, or phishing attacks.
  • Exposure to criminal activity. While the deep web is mostly legitimate, accessing certain sections of the dark web — a hidden part of the deep web — can expose you to illegal marketplaces, stolen data, or contraband.
  • Mismanagement of sensitive data. Data breaches often surface on the dark web, which can lead to identity theft for individuals and liability for organizations.
  • Likelihood of scams. The anonymity of the deep web attracts scammers, so users must remain vigilant to avoid fraud.

The deep web is 100% legal to access unless you live in a country with specific censorship laws against using it. In fact, most users browse it every day for shopping, banking, and work. The dark web, however, is different. Its anonymity creates opportunities for illegal activity. While accessing these parts of the internet is not illegal in itself, the actions taken there may still violate the law.

How to access content on the deep web

To access content on the deep web, you can just use a standard browser to log in to a protected site with your login credentials, such as a username and password. The login information allows you to access your personal accounts or your job’s internal network. You can also use the website’s search function to find content that web crawlers cannot index and is therefore not searchable by search engines.

How to surf the deep web safely

To surf the deep web safely, follow a few simple security practices to protect your personal information and devices:

  • Keep your browser up to date. Use a reputable browser like Firefox or Chrome and never ignore notifications to install updates. These updates often include features that will increase your security.
  • Avoid suspicious domains. If you’re prompted to click links, make sure to check that the domain looks accurate. If it contains misspellings or doesn’t match a company’s official website, it could be malicious.
  • Don’t download files from untrusted sources. If you download a file from an unknown source on the deep web, it could contain dangerous malware like viruses, ransomware, and spyware.
  • Never share personal information on an unknown website. Unless you are absolutely sure the site is legitimate, do not share information like your name, address, or phone number. 
  • Create strong passwords. Avoid making it easy for cybercriminals by using simple or reused passwords. Create strong, unique passwords for each account that include capital letters, numbers, and special characters.
  • Use a VPN. A VPN (virtual private network) uses encryption to secure your data and masks your IP address. While using the deep web, a VPN gives you even more privacy and protection from scammers and surveillance.
  • Enable antivirus tools. An antivirus tool like NordVPN’s Threat Protection Pro™ will help to protect you from phishing and other cyber threats.

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Cybersecurity and Threat Protection expert Dainius Ražinskas

Dainius Ražinskas

At NordSecurity, Dainius is an online security and privacy expert and the product and engineering manager behind NordVPN’s Threat Protection Pro™. Sharp-minded and passionate about online safety, Dainius has been crafting solutions against online threats since 2020. Whether it’s data security, threat detection, or digital privacy, he creates content that is accessible and understandable for both tech-savvy readers and cybersecurity newbies.