Description: DNS security refers to the protection of the DNS infrastructure against attacks that can compromise the integrity and availability of online services. DNS is a critical component of the Internet architecture, as it translates human-readable domain names into IP addresses that computers use to communicate with each other. However, this essential functionality also makes it an attractive target for attackers. Common threats include DNS spoofing attacks, where an attacker redirects traffic to a malicious website, and denial-of-service (DDoS) attacks, which aim to overwhelm DNS servers to disrupt access to services. To mitigate these risks, various security measures are implemented, such as DNSSEC (Domain Name System Security Extensions) for validating DNS responses and ensuring their authenticity, as well as the use of firewalls to filter malicious traffic. Additionally, network segmentation and continuous monitoring are best practices for detecting and responding to security incidents. Therefore, DNS security is a fundamental aspect of ensuring the trustworthiness and functionality of online services, protecting both users and organizations from potential cyber threats.