All articles starting with H
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HackerOne
HackerOne is an American software-as-a-service company founded in 2012 and based in San Francisco that connects organizations with security researchers who find software vulnerabilities for rewards.
HackerRank
HackerRank is a developer skills company offering coding assessments for technical hiring, founded in Bangalore in 2009 as InterviewStreet and serving over 26 million developers.
Hackers (film)
Hackers (1995) is an Iain Softley techno-thriller written by Rafael Moreu, starring Jonny Lee Miller and Angelina Jolie as teenage hackers framed for theft by The Plague; a box-office failure that became a cult classic.
HackingTeam
HackingTeam was a Milan-based Italian company, founded in 2003, that sold RCS spyware to government agencies until a 2015 breach exposed its client list and internal operations.
Hackney carriage
A hackney carriage, also known as a hackney cab or black cab, is a vehicle licensed in the United Kingdom to carry paying passengers without a prior booking.
Hackney Diamonds
Hackney Diamonds (2023) is the Rolling Stones' 24th studio album, their first of original material since A Bigger Bang (2005), produced by Andrew Watt, featuring Charlie Watts on two tracks, a UK number 1 and Grammy Best Rock Album winner.
Hackney Diamonds Tour
The Hackney Diamonds Tour was a 2024 North American stadium tour by the Rolling Stones supporting their album Hackney Diamonds, running April 28 to July 17, 2024, across 16 cities.
Hackney Downs School
Hackney Downs School (Grocers Company School), a boys' secondary school in Lower Clapton, Hackney, founded 1876, became comprehensive 1974, closed December 1995 as the first school seized by a government education association; site later became Mossbourne Community Academy (2004).
Hacks (TV series)
Hacks is an HBO Max comedy-drama (2021–2026) created by Paul W. Downs, Lucia Aniello, and Jen Statsky, starring Jean Smart as Vegas comic Deborah Vance and Hannah Einbinder as writer Ava; five seasons, 86 Emmy nominations, 14 wins.
Hacksaw
A hacksaw is a fine-toothed saw designed for cutting metal, consisting of a C-shaped frame with a handle and a tensioned blade; the power hacksaw is its motorized form.
Hacksaw Ridge
Hacksaw Ridge (2016) is Mel Gibson's war drama starring Andrew Garfield as Desmond Doss, the first conscientious objector Medal of Honor recipient, who saved 75 men on Okinawa without a weapon; independently financed at $53 million, shot in Australia, Oscar winner for Best Director.
Hacktivism
Hacktivism, from hacking plus activism, is the use of hacking techniques to promote political agendas. Coined by Cult of the Dead Cow; known for DDoS, defacement, doxing, and conflict-driven state-aligned campaigns.
hacomono
hacomono (株式会社hacomono), founded by Kenichi Hasuda in Tokyo in 2013 as Machiiro, is a SaaS company whose management system serves over 13,000 gyms and wellness facilities.
HACP trial
HACP trial (NCT02368678), Study of Halitosis in Patients With Advanced Chronic Periodontitis: Brazilian randomized trial comparing full-mouth disinfection with quadrant scaling; both reduced halitosis at 90 days, FMD showing the larger methyl mercaptan reduction.
Had I Not Seen the Sun (如果我不曾见过太阳)
Had I Not Seen the Sun (如果我不曾見過太陽) is a 2025 Taiwanese Netflix mystery romance series from the Someday or One Day team, starring Tseng Jing-hua as the 'Rainstorm Killer' Li Jen-yao, released in two parts in November and December 2025.
Hada Chauhans of Bundi and Kota
The Hada Chauhans of Bundi and Kota are a Rajput clan that ruled southeastern Rajasthan, founding Bundi under Rao Deva and seeing Kota made an independent state in 1631.
Hadad
Hadad (Haddu, Adad, Iškur), the ancient Near Eastern storm god of rain, thunder, and lightning, worshipped from late fourth-millennium Shuruppak onward and identified with Canaanite Baal, with cult centers at Aleppo and Damascus.
Hadad the Edomite
Hadad the Edomite is an Edomite prince of 1 Kings 11 who fled Joab's massacre as a child, was sheltered in Egypt, and became an adversary of Solomon.
Hadad-yith'i
Hadad-yith'i, also Adad-it'i, was a ninth-century BC ruler of the Aramean city of Guzana, known only from the bilingual statue he dedicated to Hadad at Tell Fekheriye.
Hadadezer (king of Zobah)
Hadadezer, also spelled Hadarezer, was the Aramean king of Zobah, son of Rehob, whom the Hebrew Bible presents as David's opponent north of Damascus in the tenth century BC.
Hadal zone
Hadal zone (hadalpelagic zone): the deepest ocean zone, about 6,000–11,000 m, confined to trenches and troughs, named after Hades; area near Australia's size, over 400 known trench species.
Hadamard gate
The Hadamard gate is a single-qubit quantum gate, drawn as a box labeled H, that maps |0⟩ and |1⟩ into equal superpositions, so measurement gives 0 or 1 with equal probability.
Hadamard matrix
A Hadamard matrix is a square matrix whose entries are all +1 or −1 and whose rows are mutually orthogonal, achieving the largest determinant possible of n^(n/2).
Hadamard product (matrices)
The Hadamard product, also called the Schur product or entrywise product, multiplies two matrices of the same size entry by entry, unlike ordinary matrix multiplication.
Hadamard transform
The Hadamard transform, also called the Walsh-Hadamard transform, is a fast discrete linear transform that uses only additions and subtractions, with applications in signal processing and quantum computing.
Hadamard's inequality for integrals
Hadamard's inequality for integrals, more often called the Hermite–Hadamard inequality, bounds the integral of a convex function between its midpoint value and its endpoint average.
Hadanish
Hadanish, also rendered Hataniš, is the only king the Sumerian King List records for Hamazi, ruling 360 years after Kish was defeated; no contemporary inscription names him.
Hadas Shtrikman
Hadas Shtrikman is a physicist at the Weizmann Institute of Science in Rehovot, Israel, known for the first electronic Mach–Zehnder interferometer and superconductor vortex-matter experiments.
Hadash (חד"ש)
Hadash (חד"ש, al-Jabha), the Democratic Front for Peace and Equality, is an Israeli far-left, Jewish-Arab party founded in 1977 by the Communist Party (Rakah/Maki), running in every Knesset election since, non-Zionist, two-state, and a Joint List component.
HadCM3
HadCM3 (Hadley Centre Coupled Model version 3) is a coupled atmosphere–ocean–sea ice climate model released by the Met Office Hadley Centre in 1999, requiring almost no flux adjustments.