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What is DNSSEC?
Domain Name System Security Extensions or shorter DNNSEC is an Internet security protocol that is designed to detect and stop the interception and data changes to the authoritative servers . DNNSEC provides credibility to the Internet user that the web page you're visiting actually corresponds to that which is found at the address field entered in the web browser.
Introducing DNNSEC is a long-term strategy to ensure greater levels of Internet security , and its introduction not only protects users and their data but helps to build a more secure global system.

Who can / should use it?
Internet users do not have to take any additional steps . If your Internet service provider ( ISP ) supports DNNSEC then you are protected and security checks are made on the DNS servers of your Internet service provider.

If you are a .hr domain holder it is necessary to enter DS ( delegation signer ) records in the domain administration, individually or through an authorized Registrar and thus allow the use of DNSSEC. DS records are provided to the domain holder by hosting services.

It is important to note that because of the distributed nature of the DNS system, DNSSEC needs to be supported by a large number of DNS service providers for its utilization to be relevant.

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