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Domain hijacking or domain theft is the act of changing the registration of a domain name without the permission of its original registrant. This can be financially devastating to the original domain name holder, who may have derived commercial income from a website hosted at the domain or conducted business through that domain's e-mail accounts. Additionally, the hijacker can use the domain name to facilitate illegal activity such as phishing, where a website is replaced by an identical website that records private information such as log-in passwords. ==Description== Domain hijacking can be done in several ways, generally by exploiting a vulnerability in the domain name registration system or through social engineering. The most common tactic used by a domain hijacker is to use acquired personal information about the actual domain owner to impersonate them and persuade the domain registrar to modify the registration information and/or transfer the domain to another registrar, a form of identity theft. Once this has been done, the hijacker has full control of the domain and can use it or sell it to a third party. Other methods include email vulnerability, vulnerability at the domain-registration level, keyloggers, and phishing sites.〔http://aplegal.com/2014/12/31/slamming-door-domain-name-hijacking/〕 Responses to discovered hijackings vary; sometimes the registration information can be returned to its original state by the current registrar, but this may be more difficult if the domain name was transferred to another registrar, particularly if that registrar resides in another country. In some cases the original domain owner is not able to regain control over the domain. The legal status of domain hijacking remains unclear. It is analogous with theft, in that the original owner is deprived of the benefits of the domain, but theft traditionally regards concrete goods such as jewelry and electronics, whereas domain name ownership is stored only in the digital state of the domain name registry, a network of computers. There are no specific laws regarding domain hijacking, nor any law that specifically holds the domain name registrar responsible for allowing the registrant information to be modified without the permission of the original registrant. In some cases there may be recourse under trademark law, but not all domain names are (or can be) registered as trademarks. Another method of cybercriminals doing "domain hijacking" is from the backend of hosting and registrar companies. Misusing their company systems to prevent the owner from being contacted by interested parties, for example by fraudulently entering whois-data, and even knowingly stopping or cancelling a customers payment for renewal, allowing the "stolen" domain to then be expired and auctioned via a domain-auctioning site like SnapNames.com . This is considered to be backend computer-misuse, which is within the scope of UK cybercrime legislation.〔https://www.snapnames.com/domainnewsresources/news/how_to_get_a_domain_that_is_already_taken〕 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「domain hijacking」の詳細全文を読む スポンサード リンク
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