What Is DNSSEC and How Does It Work?
DNSSEC (Domain Name System Security Extensions) is a security feature that helps protect you from certain types of online attacks by making sure the DNS information you receive is authentic and unchanged.
How DNSSEC Protects You
DNSSEC uses digital signatures to verify that the DNS data you get (like the IP address of a website) hasn’t been altered.
This ensures that you are connecting to the real website you typed in, such as www.example.co.
While DNSSEC verifies authenticity, it does not encrypt your data—that is still handled by other tools like SSL/TLS.
Where It’s Implemented
For DNSSEC to work, it must be enabled at every step of the DNS lookup process, from the root of the internet to your specific domain.
Key milestones:
Root zone secured: July 15, 2010
.CO Registry adopted DNSSEC: first half of 2011
Key Takeaway
DNSSEC doesn’t hide or encrypt information—it ensures the websites you visit are legitimate and not tampered with, adding an extra layer of trust to your browsing experience.