July 21, 2017 Necessity for Updating DNS Cache Server Configuration due to Global Internet DNS Key Change

The Internet Corporation for Assigned Names and Numbers (ICANN), a nonprofit organization responsible for worldwide management and adjustment work on the important resources of the Internet, has decided to renew the Root Zone KSK, the highest key among all encryption keys used to verify the validity of digital signatures in the Domain Name System (DNS).
At the request of ICANN, the Ministry of Internal Affairs and Communications in corporation with the National Center of Incident Readiness and Strategy for Cybersecurity has been informing all domestic parties concerned of the above.