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Community-developed Framework for Registry Operator's Response to Security Threats Now Available

LOS ANGELES – 20 October 2017 – The Internet Corporation for Assigned Names and Numbers today announced a voluntary Framework for Registry Operator's Response to Security Threats (Framework). The Framework provides guidance to registry operators to respond to security threats.

The Security Framework Drafting Team, consisting of representatives from registries, registrars, and the Public Safety Working Group of the GAC collaborated with the ICANN organization over the past two years to produce the Framework. The Framework was published for public comment and is supported by the Registry Stakeholder Group, Registrar Stakeholder Group and the Public Safety Working Group and the GAC. Additional information is available at the SFDT community wiki workspace.

About the Framework

The Security Framework provides the following type of information:

  • Scope of the voluntary framework
  • Categories of actions by registries in response to security threats
  • Types of reports from security authorities and sources
  • Recommended and expected response timeline

For more information, send an email to with "Security Framework" in the subject line.


ICANN's mission is to help ensure a stable, secure and unified global Internet. To reach another person on the Internet, you need to type an address – a name or a number – into your computer or other device. That address must be unique so computers know where to find each other. ICANN helps coordinate and support these unique identifiers across the world. ICANN was formed in 1998 as a not-for-profit public-benefit corporation with a community of participants from all over the world.

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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."