DoxingDoxing or doxxing is the act of publicly providing personally identifiable information about an individual or organization, usually via the Internet. Historically, the term has been used interchangeably to refer to both the aggregation of this information from public databases and social media websites (like Facebook), as well as the publication of previously private information obtained through criminal or otherwise fraudulent means (such as hacking and social engineering).
Digital currencyDigital currency (digital money, electronic money or electronic currency) is any currency, money, or money-like asset that is primarily managed, stored or exchanged on digital computer systems, especially over the internet. Types of digital currencies include cryptocurrency, virtual currency and central bank digital currency. Digital currency may be recorded on a distributed database on the internet, a centralized electronic computer database owned by a company or bank, within or even on a stored-value card.
FungibilityIn economics, fungibility is the property of a good or a commodity whose individual units are essentially interchangeable, and each of whose parts are indistinguishable from any other part. Fungible tokens can be exchanged or replaced; for example, a 100bill(note)caneasilybeexchangedfortwenty5 bills (notes). In contrast, non-fungible tokens cannot be exchanged in the same manner. For example, gold is fungible because its value does not depend on any specific form, whether of coins, ingots, or other states. CryptographyCryptography, or cryptology (from κρυπτός "hidden, secret"; and γράφειν graphein, "to write", or -λογία -logia, "study", respectively), is the practice and study of techniques for secure communication in the presence of adversarial behavior. More generally, cryptography is about constructing and analyzing protocols that prevent third parties or the public from reading private messages. Modern cryptography exists at the intersection of the disciplines of mathematics, computer science, information security, electrical engineering, digital signal processing, physics, and others.
Trusted timestampingTrusted timestamping is the process of securely keeping track of the creation and modification time of a document. Security here means that no one—not even the owner of the document—should be able to change it once it has been recorded provided that the timestamper's integrity is never compromised. The administrative aspect involves setting up a publicly available, trusted timestamp management infrastructure to collect, process and renew timestamps. The idea of timestamping information is centuries old.
Nasdaq-100The Nasdaq-100 (^NDX) is a stock market index made up of 101 equity securities issued by 100 of the largest non-financial companies listed on the Nasdaq stock exchange. It is a modified capitalization-weighted index. The stocks' weights in the index are based on their market capitalizations, with certain rules capping the influence of the largest components. It is limited to companies from a single exchange, and it does not have any financial companies. The financial companies are in a separate index, the Nasdaq Financial-100.
HashcashHashcash is a proof-of-work system used to limit E-mail spam and denial-of-service attacks. Hashcash was proposed in 1997 by Adam Back and described more formally in Back's 2002 paper "Hashcash - A Denial of Service Counter-Measure". The idea "...to require a user to compute a moderately hard, but not intractable function..." was proposed by Cynthia Dwork and Moni Naor in their 1992 paper "Pricing via Processing or Combatting Junk Mail".
Consensus (computer science)A fundamental problem in distributed computing and multi-agent systems is to achieve overall system reliability in the presence of a number of faulty processes. This often requires coordinating processes to reach consensus, or agree on some data value that is needed during computation. Example applications of consensus include agreeing on what transactions to commit to a database in which order, state machine replication, and atomic broadcasts.
Alternative DNS rootThe Internet uses the Domain Name System (DNS) to associate numeric computer IP addresses with human-readable names. The top level of the domain name hierarchy, the DNS root, contains the top-level domains that appear as the suffixes of all Internet domain names. The most widely used (and first) DNS root is administered by the Internet Corporation for Assigned Names and Numbers (ICANN). In addition, several organizations operate alternative DNS roots, often referred to as alt roots.
Terrorism financingTerrorism financing is the provision of funds or providing financial support to individual terrorists or non-state actors. Most countries have implemented measures to counter terrorism financing (CTF) often as part of their money laundering laws. Some countries and multinational organisations have created a list of organisations that they regard as terrorist organisations, though there is no consistency as to which organisations are designated as being terrorist by each country.
