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Update: New gTLD Applicant and GDD Portal Back Online

The reported security issue in the New gTLD Applicant and GDD portals, as described in yesterday's announcement below, has been addressed. The portals are now back online. An investigation to determine whether any data was exposed to an unauthorized user is ongoing.

As more information becomes available we will report on our findings and publish updates at and

Announcement: New gTLD Applicant and GDD Portal Update

1 March 2015

ICANN temporarily took its New gTLD Applicant and GDD portals offline on 27 February 2015 to investigate a reported security issue. Access to, and data in, these portals is limited to New gTLD Program applicants and New gTLD registry operators. Under certain circumstances an authenticated portal user could potentially view data of, or related to, other users.

There is currently no indication that this issue resulted in any actual exposure of data to an unauthorized party. There is also no indication that anyone other than those authorized to access the portal did so.

We are working to implement a solution to the reported issue and bring the portals back online. We are also continuing to investigate whether any data was exposed to an unauthorized user.

As more information becomes available we will report on our findings and publish updates at and

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Domain Name System
Internationalized Domain Name ,IDN,"IDNs are domain names that include characters used in the local representation of languages that are not written with the twenty-six letters of the basic Latin alphabet ""a-z"". An IDN can contain Latin letters with diacritical marks, as required by many European languages, or may consist of characters from non-Latin scripts such as Arabic or Chinese. Many languages also use other types of digits than the European ""0-9"". The basic Latin alphabet together with the European-Arabic digits are, for the purpose of domain names, termed ""ASCII characters"" (ASCII = American Standard Code for Information Interchange). These are also included in the broader range of ""Unicode characters"" that provides the basis for IDNs. The ""hostname rule"" requires that all domain names of the type under consideration here are stored in the DNS using only the ASCII characters listed above, with the one further addition of the hyphen ""-"". The Unicode form of an IDN therefore requires special encoding before it is entered into the DNS. The following terminology is used when distinguishing between these forms: A domain name consists of a series of ""labels"" (separated by ""dots""). The ASCII form of an IDN label is termed an ""A-label"". All operations defined in the DNS protocol use A-labels exclusively. The Unicode form, which a user expects to be displayed, is termed a ""U-label"". The difference may be illustrated with the Hindi word for ""test"" — परीका — appearing here as a U-label would (in the Devanagari script). A special form of ""ASCII compatible encoding"" (abbreviated ACE) is applied to this to produce the corresponding A-label: xn--11b5bs1di. A domain name that only includes ASCII letters, digits, and hyphens is termed an ""LDH label"". Although the definitions of A-labels and LDH-labels overlap, a name consisting exclusively of LDH labels, such as"""" is not an IDN."