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Definition. The dark web has often been confused with the deep web, the parts of the web not indexed (searchable) by search engines. The term dark web first emerged in 2009; however, it is unknown when the actual dark web first emerged. [11] Many internet users only use the surface web, data that can be accessed by a typical web browser. [12]
The history of the Internet has its origin in the efforts of scientists and engineers to build and interconnect computer networks.The Internet Protocol Suite, the set of rules used to communicate between networks and devices on the Internet, arose from research and development in the United States and involved international collaboration, particularly with researchers in the United Kingdom and ...
Principal component analysis ( PCA) is a linear dimensionality reduction technique with applications in exploratory data analysis, visualization and data preprocessing . The data is linearly transformed onto a new coordinate system such that the directions (principal components) capturing the largest variation in the data can be easily identified.
The implementation of the blockchain within bitcoin made it the first digital currency to solve the double-spending problem without the need for a trusted authority or central server. The bitcoin design has inspired other applications and blockchains that are readable by the public and are widely used by cryptocurrencies.
Clone phishing is a type of attack where a legitimate email with an attachment or link is copied and modified to contain malicious content. The modified email is then sent from a fake address made to look like it's from the original sender. The attack may appear to be a resend or update of the original email.
Pinterest consists mainly of "pins" and "boards". A pin is an image that has been linked from a website or uploaded. Pins saved from one user's board can be saved to someone else's board, a process known as "repinning". [48] Boards are collections of pins dedicated to a theme.