
Internet privacy involves the right or mandate of personal privacy concerning the storing, repurposing, provision to third parties, and displaying of information pertaining to oneself via Internet. Internet privacy is a subset of data privacy. Privacy concerns have been articulated from the beginnings of large-scale computer sharing.

CSipSimple is a Voice over Internet Protocol (VoIP) application for Google Android operating system using the Session Initiation Protocol (SIP). It is open source and free software released under the GNU General Public License.

Cypherpunks: Freedom and the Future of the Internet is a 2012 book by Julian Assange, in discussion with Internet activists and cypherpunks Jacob Appelbaum, Andy Müller-Maguhn and Jérémie Zimmermann. Its primary topic is society's relationship with information security. In the book, the authors warn that the Internet has become a tool of the police state, and that the world is inadvertently heading toward a form of totalitarianism. They promote the use of cryptography to protect against state surveillance.

Doxbin is a document sharing and publishing website which invites users to contribute personally identifiable information, or "dox", of any person of interest. It was previously operated on the darknet as a Tor hidden service, by a person known on the internet as nachash. Since its takedown in 2014, nachash has stepped down and relinquished his ownership to a predecessor that used the username "King Oren" when interviewed. He said in an interview that he is hosting Doxbin on the World Wide Web, as well as on Darknet and Tor hidden service websites. He declined to release the link to either of them, saying, "The people that use the service know how to find it, that's what keeps it secure and out of the reach of incompetent people using it for malice things".

The Facebook real-name policy controversy is a controversy over social networking site Facebook's real-name system, which requires that a person use their legal name when they register an account and configure their user profile. The controversy stems from claims by some users that they are being penalized by Facebook for using their real names, and have suffered adverse consequences as a result. For example, Facebook's naming policies prohibit names that Facebook judges to have too many words, too many capital letters, or first names that consist of initials. Facebook's monitoring software detects and suspends such accounts. These policies prevent some users from having a Facebook account and profile with their real name.

An intranet is a computer network for sharing information, collaboration tools, operational systems, and other computing services within an organization, usually to the exclusion of access by outsiders. The term is used in contrast to public networks, such as the Internet, but uses most of the same technology based on the Internet Protocol Suite.

IVPN is a VPN service offered by Privatus Limited based in Gibraltar. Privatus Limited has been independently audited by cure53 and has undergone a no-logging audit and a comprehensive pentest report. They Accept Bitcoin, Monero, and Cash as payment methods and all of their clients are open source as well.

Minds is an alt-tech blockchain-based social network. Users can earn money or cryptocurrency for using Minds, and tokens can be used to boost their posts or crowdfund other users. Minds has been described as more privacy-focused than mainstream social media networks. Writers in The New York Times, Engadget, and Vice have noted the volume of far-right users and content on the platform. Minds describes itself as focused on free speech, and minimally moderates the content on its platform. Its founders have said that they do not remove extremist content from the site out of a desire to deradicalize those who post it through civil discourse.

Mix networks are routing protocols that create hard-to-trace communications by using a chain of proxy servers known as mixes which take in messages from multiple senders, shuffle them, and send them back out in random order to the next destination. This breaks the link between the source of the request and the destination, making it harder for eavesdroppers to trace end-to-end communications. Furthermore, mixes only know the node that it immediately received the message from, and the immediate destination to send the shuffled messages to, making the network resistant to malicious mix nodes.

Mullvad is an open-source commercial VPN service based in Sweden. Launched in March 2009, Mullvad operates using the WireGuard and OpenVPN protocols. Mullvad accepts Bitcoin and Bitcoin Cash for subscriptions in addition to conventional payment methods.

Private Internet Access (PIA) is a personal VPN service. In 2018, former Mt. Gox CEO Mark Karpelès was named chief technology officer of PIA's parent company, London Trust Media. In November 2019, Private Internet Access was acquired by Kape Technologies.

Privoxy is a free non-caching web proxy with filtering capabilities for enhancing privacy, manipulating cookies and modifying web page data and HTTP headers before the page is rendered by the browser. Privoxy is a "privacy enhancing proxy", filtering web pages and removing advertisements. Privoxy can be customized by users, for both stand-alone systems and multi-user networks. Privoxy can be chained to other proxies and is frequently used in combination with Squid among others and can be used to bypass Internet censorship.

A proxy list is a list of open HTTP/HTTPS/SOCKS proxy servers all on one website. Proxies allow users to make indirect network connections to other computer network services. Proxy lists include the IP addresses of computers hosting open proxy servers, meaning that these proxy servers are available to anyone on the internet. Proxy lists are often organized by the various proxy protocols the servers use. Many proxy lists index Web proxies, which can be used without changing browser settings.

In computer networking, a proxy server is a server application that acts as an intermediary between a client requesting a resource and the server providing that resource.

PeRiQuito AB (PRQ) is a Swedish Internet service provider and web hosting company created in 2004.

Syndie is an open-source cross-platform computer application to syndicate (re-publish) data over a variety of anonymous and non-anonymous computer networks.

Upstream collection is a term used by the National Security Agency (NSA) of the United States for intercepting telephone and Internet traffic from the Internet backbone, i.e. major Internet cables and switches, both domestic and foreign. Besides the Upstream collection, NSA also gathers information from Internet communications through arrangements with Internet companies under the program codenamed PRISM. Both the Upstream programs and PRISM are part of the Special Source Operations (SSO) division, which is responsible for collection in cooperation with corporate partners.

This article provides a detailed historic account of the reception and criticism of security and privacy features in the WhatsApp messaging service.

WikiScanner was a publicly searchable database operating between 2002 and 2007 that linked millions of anonymous edits on Wikipedia to the organizations where those edits apparently originated, by cross-referencing the edits with data on the owners of the associated block of IP addresses though it did not investigate edits made under a username. It was created by Virgil Griffith and released on August 14, 2007.