On the Internet

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Websites, such as DonorsChoose and GlobalGiving , allow small-scale donors to direct funds to individual projects of their choice. A popular twist on Internet-based philanthropy is the use of peer-to-peer lending for charitable purposes. Kiva pioneered this concept in , offering the first web-based service to publish individual loan profiles for funding. Kiva raises funds for local intermediary microfinance organizations which post stories and updates on behalf of the borrowers. Kiva falls short of being a pure peer-to-peer charity, in that loans are disbursed before being funded by lenders and borrowers do not communicate with lenders themselves.

However, the recent spread of low-cost Internet access in developing countries has made genuine international person-to-person philanthropy increasingly feasible.

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In , the US-based nonprofit Zidisha tapped into this trend to offer the first person-to-person microfinance platform to link lenders and borrowers across international borders without intermediaries. Members can fund loans for as little as a dollar, which the borrowers then use to develop business activities that improve their families' incomes while repaying loans to the members with interest. Borrowers access the Internet via public cybercafes, donated laptops in village schools, and even smart phones, then create their own profile pages through which they share photos and information about themselves and their businesses.

As they repay their loans, borrowers continue to share updates and dialogue with lenders via their profile pages. This direct web-based connection allows members themselves to take on many of the communication and recording tasks traditionally performed by local organizations, bypassing geographic barriers and dramatically reducing the cost of microfinance services to the entrepreneurs.

Internet resources, hardware, and software components are the target of criminal or malicious attempts to gain unauthorized control to cause interruptions, commit fraud, engage in blackmail or access private information. Malware is malicious software used and distributed via the Internet.

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It includes computer viruses which are copied with the help of humans, computer worms which copy themselves automatically, software for denial of service attacks , ransomware , botnets , and spyware that reports on the activity and typing of users. Usually, these activities constitute cybercrime. Defense theorists have also speculated about the possibilities of cyber warfare using similar methods on a large scale. The vast majority of computer surveillance involves the monitoring of data and traffic on the Internet.

Computers communicate over the Internet by breaking up messages emails, images, videos, web pages, files, etc. Packet Capture Appliance intercepts these packets as they are traveling through the network, in order to examine their contents using other programs. A packet capture is an information gathering tool, but not an analysis tool. That is it gathers "messages" but it does not analyze them and figure out what they mean.

The large amount of data gathered from packet capturing requires surveillance software that filters and reports relevant information, such as the use of certain words or phrases, the access of certain types of web sites, or communicating via email or chat with certain parties.

Some governments, such as those of Burma , Iran , North Korea , Mainland China , Saudi Arabia and the United Arab Emirates restrict access to content on the Internet within their territories, especially to political and religious content, with domain name and keyword filters.

In Norway, Denmark, Finland, and Sweden, major Internet service providers have voluntarily agreed to restrict access to sites listed by authorities. While this list of forbidden resources is supposed to contain only known child pornography sites, the content of the list is secret. Many free or commercially available software programs, called content-control software are available to users to block offensive websites on individual computers or networks, in order to limit access by children to pornographic material or depiction of violence.

As the Internet is a heterogeneous network, the physical characteristics, including for example the data transfer rates of connections, vary widely.

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It exhibits emergent phenomena that depend on its large-scale organization. The volume of Internet traffic is difficult to measure, because no single point of measurement exists in the multi-tiered, non-hierarchical topology. Traffic data may be estimated from the aggregate volume through the peering points of the Tier 1 network providers, but traffic that stays local in large provider networks may not be accounted for.

An Internet blackout or outage can be caused by local signalling interruptions. Disruptions of submarine communications cables may cause blackouts or slowdowns to large areas, such as in the submarine cable disruption. Less-developed countries are more vulnerable due to a small number of high-capacity links. Land cables are also vulnerable, as in when a woman digging for scrap metal severed most connectivity for the nation of Armenia. In , researchers estimated the energy used by the Internet to be between and GW, less than two percent of the energy used by humanity.

This estimate included the energy needed to build, operate, and periodically replace the estimated million laptops, a billion smart phones and million servers worldwide as well as the energy that routers, cell towers, optical switches, Wi-Fi transmitters and cloud storage devices use when transmitting Internet traffic. From Wikipedia, the free encyclopedia.

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This article is about the worldwide computer network. For other uses, see Internet disambiguation. Not to be confused with the World Wide Web. Global system of connected computer networks.

An Opte Project visualization of routing paths through a portion of the Internet. Information infrastructure. Book Index Outline. See also: Capitalization of "Internet". Main article: Internet governance. See also: List of countries by number of Internet users and List of countries by Internet connection speeds.

See also: Global Internet usage and English in computing. Internet users by language [79]. Website content languages [80]. Internet users in as a percentage of a country's population. Main articles: Global digital divide and Digital divide. Fixed broadband Internet subscriptions in as a percentage of a country's population.

Mobile broadband Internet subscriptions in as a percentage of a country's population. See also: Internet censorship , Mass surveillance , and Social media use in politics. Main article: Internet security. Main article: Computer and network surveillance. See also: Signals intelligence and Mass surveillance.

Main articles: Internet censorship and Internet freedom. See also: Culture of fear and Great Firewall. Internet censorship and surveillance by country [] [] [] [] []. Little or none. Internet portal. Retrieved 27 June Hoffman and S. USA Today.


Internet - Wikipedia

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