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Cryptocat
Cryptocat is a discontinued open-source desktop application intended to allow encrypted online chatting available for Windows, OS X, and Linux. It uses end-to-end encryption to secure all communications to other Cryptocat users. Users are given the option of independently verifying their buddies' device lists and are notified when a buddy's device list is modified and all updates are verified through the built-in update downloader. Cryptocat was created by Nadim Kobeissi and further developed along with a community of open source contributors and is published under the terms of the GPLv3 license, although it has since been discontinued. History Cryptocat was first launched on 19 May 2011 as a web application. In June 2012, Kobeissi said he was detained at the U.S. border by the DHS and questioned about Cryptocat's censorship resistance. He tweeted about the incident afterwards, resulting in media coverage and a spike in the popularity of the software. In June 2013, security re ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nadim Kobeissi
Nadim Kobeissi ( ar, نديم قبيسي; born 28 September 1990) is a French-Lebanese computer science researcher specialized in applied cryptography. He is the author of Cryptocat, an open-source encrypted web chat client. Kobeissi is also known for speaking publicly against Internet censorship and Internet surveillance. Early life and education Kobeissi was born in Beirut, Lebanon. He studied at the Lebanese American University in Beirut from 2008 to 2009, and graduated with a degree in philosophy at Concordia University in Montreal, Canada in 2013. Kobeissi was a Ph.D. student in applied cryptography at Inria in Paris. from 2015 to 2018. In 2018 and 2019 he was adjunct professor of computer science at New York University's Paris campus teaching a course on computer security. In 2021 Kobeissi was naturalized French Citizen. Kobeissi is fluent in Arabic, French, and English and is based in Paris. Research Kobeissi is the primary author of Cryptocat. The project was disconti ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Online Chat
Online chat may refer to any kind of communication over the Internet that offers a real-time text, real-time transmission of text-based, text messages from sender to receiver. Chat messages are generally short in order to enable other participants to respond quickly. Thereby, a feeling similar to a spoken conversation is created, which distinguishes chatting from other text-based online communication forms such as Internet forums and email. Online chat may address Point-to-point (telecommunications), point-to-point communications as well as multicast communications from one sender to many receivers and voice and video chat, or may be a feature of a web conferencing service. Online chat in a less stringent definition may be primarily any direct text-based or video-based (webcams), one-on-one chat or one-to-many chat room, group chat (formally also known as synchronous conferencing), using tools such as instant messengers, Internet Relay Chat (IRC), talkers and possibly MUDs or ot ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
United States Department Of Homeland Security
The United States Department of Homeland Security (DHS) is the Federal government of the United States, U.S. United States federal executive departments, federal executive department responsible for public security, roughly comparable to the Interior minister, interior or home ministries of other countries. Its stated missions involve anti-terrorism, border security, immigration and customs, cyber security, and disaster prevention and management. It began operations in 2003, formed as a result of the Homeland Security Act of 2002, enacted in response to the September 11 attacks. With more than 240,000 employees, DHS is the third-largest Cabinet of the United States, Cabinet department, after the Departments of United States Department of Defense, Defense and United States Department of Veterans Affairs, Veterans Affairs. Homeland security policy is coordinated at the White House by the United States Homeland Security Council, Homeland Security Council. Other agencies with signi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hassan Rouhani
Hassan Rouhani ( fa, حسن روحانی, Standard Persian pronunciation: ; born Hassan Fereydoun ( fa, حسن فریدون, links=no); 12 November 1948) is an Iranian politician who served as the seventh president of Iran from 2013 to 2021. He is also a sharia lawyer ("Wakil"), academic, former diplomat and Islamic cleric. He has been a member of Iran's Assembly of Experts since 1999. He was a member of the Expediency Council from 1991 to 2021, and also was a member of the Supreme National Security Council from 1989 to 2021. Rouhani was deputy speaker of the fourth and fifth terms of the Parliament of Iran ( Majlis) and Secretary of the Supreme National Security Council from 1989 to 2005. In the latter capacity, he was the country's top negotiator with the EU three, UK, France, and Germany, on nuclear technology in Iran, and has also served as a Shia mujtahid (a senior cleric), and economic trade negotiator. On 7 May 2013, Rouhani registered for the presidential election ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Iran
Iran, officially the Islamic Republic of Iran, and also called Persia, is a country located in Western Asia. It is bordered by Iraq and Turkey to the west, by Azerbaijan and Armenia to the northwest, by the Caspian Sea and Turkmenistan to the north, by Afghanistan and Pakistan to the east, and by the Gulf of Oman and the Persian Gulf to the south. It covers an area of , making it the 17th-largest country. Iran has a population of 86 million, making it the 17th-most populous country in the world, and the second-largest in the Middle East. Its largest cities, in descending order, are the capital Tehran, Mashhad, Isfahan, Karaj, Shiraz, and Tabriz. The country is home to one of the world's oldest civilizations, beginning with the formation of the Elamite kingdoms in the fourth millennium BC. It was first unified by the Medes, an ancient Iranian people, in the seventh century BC, and reached its territorial height in the sixth century BC, when Cyrus the Great fo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Edward Snowden
Edward Joseph Snowden (born June 21, 1983) is an American and naturalized Russian former computer intelligence consultant who leaked highly classified information from the National Security Agency (NSA) in 2013, when he was an employee and subcontractor. His disclosures revealed numerous global surveillance programs, many run by the NSA and the Five Eyes intelligence alliance with the cooperation of telecommunication companies and European governments and prompted a cultural discussion about national security and individual privacy. In 2013, Snowden was hired by an NSA contractor, Booz Allen Hamilton, after previous employment with Dell and the CIA. Snowden says he gradually became disillusioned with the programs with which he was involved, and that he tried to raise his ethical concerns through internal channels but was ignored. On May 20, 2013, Snowden flew to Hong Kong after leaving his job at an NSA facility in Hawaii, and in early June he revealed thousands of class ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hong Kong
Hong Kong ( (US) or (UK); , ), officially the Hong Kong Special Administrative Region of the People's Republic of China ( abbr. Hong Kong SAR or HKSAR), is a city and special administrative region of China on the eastern Pearl River Delta in South China. With 7.5 million residents of various nationalities in a territory, Hong Kong is one of the most densely populated places in the world. Hong Kong is also a major global financial centre and one of the most developed cities in the world. Hong Kong was established as a colony of the British Empire after the Qing Empire ceded Hong Kong Island from Xin'an County at the end of the First Opium War in 1841 then again in 1842.. The colony expanded to the Kowloon Peninsula in 1860 after the Second Opium War and was further extended when Britain obtained a 99-year lease of the New Territories in 1898... British Hong Kong was occupied by Imperial Japan from 1941 to 1945 during World War II; British administration resume ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Glenn Greenwald
Glenn Edward Greenwald (born March 6, 1967) is an American journalist, author and lawyer. In 2014, he cofounded ''The Intercept'', of which he was an editor until he resigned in October 2020. Greenwald subsequently started publishing on Substack. In 1996, Greenwald founded a law firm concentrating on First Amendment litigation. He began blogging on national security issues in October 2005, while he was becoming increasingly concerned with what he viewed to be attacks on civil liberties by the George W. Bush Administration in the aftermath of the September 11 attacks. He became a vocal critic of the Iraq War and has maintained a critical position of American foreign policy. Greenwald started contributing to '' Salon'' in 2007, and to ''The Guardian'' in 2012. In June 2013, while at ''The Guardian'', he began publishing a series of reports detailing previously unknown information about American and British global surveillance programs based on classified documents provided by Ed ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
The Daily Beast
''The Daily Beast'' is an American news website focused on politics, media, and pop culture. It was founded in 2008. It has been characterized as a "high-end tabloid" by Noah Shachtman, the site's editor-in-chief from 2018 to 2021. In a 2015 interview, former editor-in-chief John Avlon described the ''Beast''s editorial approach: "We seek out scoops, scandals, and stories about secret worlds; we love confronting bullies, bigots, and hypocrites." In 2018, Avlon described the ''Beast''s "strike zone" as "politics, pop culture, and power". History ''The Daily Beast'' began publishing on October 6, 2008. Its founding editor was Tina Brown, a former editor of ''Vanity Fair'' and ''The New Yorker'' as well as the short-lived ''Talk'' magazine. The name of the site was taken from a fictional newspaper in Evelyn Waugh's novel ''Scoop''. In 2010, ''The Daily Beast'' merged with the magazine ''Newsweek'' creating a combined company, The Newsweek Daily Beast Company. The merger en ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Certificate Pinning
HTTP Public Key Pinning (HPKP) is an obsolete Internet security mechanism delivered via an HTTP header which allows HTTPS websites to resist impersonation by attackers using misissued or otherwise fraudulent digital certificates. A server uses it to deliver to the client (e.g. web browser) a set of hashes of public keys that must appear in the certificate chain of future connections to the same domain name. For example, attackers might compromise a certificate authority, and then mis-issue certificates for a web origin. To combat this risk, the HTTPS web server serves a list of “pinned” public key hashes valid for a given time; on subsequent connections, during that validity time, clients expect the server to use one or more of those public keys in its certificate chain. If it does not, an error message is shown, which cannot be (easily) bypassed by the user. The technique does not pin certificates, but public key hashes. This means that one can use the key pair to get a cert ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Trust On First Use
Trust on first use (TOFU), or trust upon first use (TUFU), is an authentication scheme used by client software which needs to establish a trust relationship with an unknown or not-yet-trusted endpoint. In a TOFU model, the client will try to look up the endpoint's identifier, usually either the public identity key of the endpoint, or the fingerprint of said identity key, in its local trust database. If no identifier exists yet for the endpoint, the client software will either prompt the user to confirm they have verified the purported identifier is authentic, or if manual verification is not assumed to be possible in the protocol, the client will simply trust the identifier which was given and record the trust relationship into its trust database. If in a subsequent connection a different identifier is received from the opposing endpoint, the client software will consider it to be untrusted. TOFU implementations In the SSH protocol, most client software (though not all) will, upo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Forward Secrecy
In cryptography, forward secrecy (FS), also known as perfect forward secrecy (PFS), is a feature of specific key agreement protocols that gives assurances that session keys will not be compromised even if long-term secrets used in the session key exchange are compromised. For HTTPS, the long-term secret is typically the private key of the server. Forward secrecy protects past sessions against future compromises of keys or passwords. By generating a unique session key for every session a user initiates, the compromise of a single session key will not affect any data other than that exchanged in the specific session protected by that particular key. This by itself is not sufficient for forward secrecy which additionally requires that a long-term secret compromise does not affect the security of past session keys. Forward secrecy protects data on the transport layer of a network that uses common Transport Layer Security protocols, including OpenSSL, when its long-term secret keys are ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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