In geometry, a torus (plural tori) is a surface of revolution generated by revolving a circle in three-dimensional space about an axis coplanar with the circle. If the axis of revolution does not touch the circle, the surface has a ring shape and is called a torus of revolution. Real-world examples of toroidal objects include inner tubes, swim rings, and the surface of a ring doughnut or bagel. A torus should not be confused with a solid torus, which is formed by rotating a disk, rather than a circle, around an axis. A solid torus is a torus plus the volume inside the torus. Real-world approximations...

Doxing (from dox, abbreviation of documents), or doxxing, is the Internet-based practice of researching and broadcasting personally identifiable information about an individual. The methods employed to acquire this information include searching publicly available databases and social media websites (like Facebook), hacking, and social engineering. It is closely related to internet vigilantism and hacktivism. Doxing may be carried out for various reasons, including to aid law enforcement, business analysis, extortion, coercion, harassment, online shaming, and vigilante justice. == Etymology == ...