At the recent Black Hat information security conference, officials of ICANN and VeriSign Inc. (Nasdaq: VRSN) announced a major change to the Domain Name Service (DNS), the Internetâs global address book. Called Domain Name Service Security Extensions (DNSSEC), the modification adds a cryptographic signature to Websitesâ addresses that verifies they are genuine. DNSSEC is an attempt to address a significant security hole in the DNS protocol, which is used to propagate changes in domain and host names across the Internet. When changes are made by an administrator to the IP address that a domain name points to, the DNS protocol pushes those changes from the siteâs primary domain name server to other domain name servers.
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