The Domain Name System (DNS) translates domain names into IP addresses, but is vulnerable to attacks due to lack of security. DNSSEC (DNS Security Extensions) introduces a chain of trust through digital signatures to authenticate DNS data, preventing spoofing and cache poisoning. While it enhances security, it also adds management complexity and requires careful implementation. Disabling DNSSEC risks significant vulnerabilities. Adopting DNSSEC is essential for a secure online environment.