Skip to main content

ICANN Registrar Contact Information Database (RADAR) Password Reset

ICANN has taken its registrar contact information database (RADAR) offline temporarily. This action was taken as a precautionary measure after it was learned that an unauthorized party viewed data in the system. ICANN has found no evidence of any unauthorized changes to the data in the system. Although the vulnerability has been corrected, RADAR will remain offline until a thorough review of the system is completed.

ICANN's logs indicate that the data that was accessed in this incident included usernames, email addresses, and hashed passwords. While no actual unencrypted passwords were taken, it is possible for a malicious person with enough computing power to reverse a hashed password, particularly a simple or common one. ICANN has uncovered no evidence that any RADAR accounts were accessed using compromised credentials. All RADAR login credentials have been reset and registrar end-users have been notified.

We apologize for the inconvenience this situation may cause. ICANN is committed to ongoing improvements in security procedures and systems. Registrars requiring additional information should contact registrar@icann.org.


More Announcements
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""icann.org"" is not an IDN."