Платформы и технологии для защиты приватности в интернете.

Platform for website privacy preferences
the PlayStation Portable video game

Microsoft's Internet Explorer and Edge were the only mainstream web browsers that supported P3P. Other browsers have not implemented it due to the perceived lack of value it provides. IE provides the ability to display P3P privacy policies, and compare the P3P policy with the browser's settings to decide whether or not to allow cookies from a particular site. However, the P3P functionality in Internet Explorer extends only to cookie blocking, and will not alert the user to an entire web site that violates active privacy preferences. Microsoft considers the feature deprecated in its browsers and totally removed P3P support on Windows 10. The Privacy Finder service was also created by Carnegie Mellon's Usable Privacy and Security Laboratory. It is a publicly available "P3P enabled search engine." A user can enter a search term along with their stated privacy preferences, and is then presented with a list of search results which are ordered based on whether the sites comply with their preferences. This works by crawling the web and maintaining a P3P cache for every site that ever appears in a search query. The cache is updated every 24 hours so that every policy is guaranteed to be relatively up to date. The service also allows users to quickly determine why a site does not comply with their preferences, as well as allowing them to view a dynamically generated natural language privacy policy based on the P3P data. This is advantageous over simply reading the original natural language privacy policy on a web site because many privacy policies are written in legalese and are extremely convoluted. Additionally, in this case the user does not have to visit the web site to read its privacy policy.

P3P user agents are not the only option available for Internet users that want to ensure their privacy. Several of the main alternatives to P3P include using web browsers' privacy mode, anonymous e mailers and anonymous proxy servers. The main alternative to P3P may not be these technologies, but instead stronger laws to regulate what kind of information from Internet users can be collected and retained by websites. For example, in Europe, the General Data Protection Regulation provides individuals with a certain set of principles about how personal information is collected and the person's rights to protecting their personal data. The act allows individuals to control the type of information that is being collected from them. Various principles are included within the act, such as the rule that individual has the right to retrieve the data collected about them at any time under certain conditions. Moreover, the individual's personal information cannot be kept longer than necessary, and not be used for purposes other than those agreed upon to begin with. Currently, the United States has no federal law protecting the privacy of personal information shared online. However, there are some sectoral laws at the federal and state level that offer some protection for certain types of information collected about individuals. For example, the Fair Credit Reporting Act (FCRA) of 1970 makes it legal for consumer reporting agencies to disclose personal information only under three specified circumstances: credit, employment or insurance evaluation; government grant or license; or a “legitimate business need” that involves the consumer. A list of other sectoral privacy laws in the United States can be viewed at the Consumer Privacy Guide's website.