The role of DNS security in mitigating cyber threats: An analysis of recent attacks and recommended strategies

The Domain Name System (DNS) is a key part of the system of Internet. It works like a phone book for the web. But DNS has become more and more appealing to hackers who want to take advantage of security holes for bad reasons. This study paper looks at recent DNS attacks and how they have affected businesses and people. The paper looks at the role that DNS security plays in reducing cyber risks and suggests ways to improve DNS security.

The first part of the paper talks about current DNS attacks, such as DNS cache poisoning, DDoS attacks, and DNS hijacking. The analysis of these attacks shows how they affect the security and stability of the internet and how they have the potential to disrupt key infrastructure and do a lot of damage to the economy.

The paper then looks at the different ways to protect DNS, such as DNSSEC, DNS-over-TLS, and DNS-over-HTTPS. The pros and cons of each method are talked about, as well as how likely they are to be widely used.

Lastly, the paper suggests a multi-layered approach to DNS security that combines technical solutions with organizational rules and practices. The suggested strategies include the use of DNSSEC and other DNS security protocols, the use of network monitoring and threat detection tools, and the creation of backup plans for DNS-based attacks.

Overall, this study paper shows how important DNS security is for protecting the internet from cyber threats and keeping it honest and reliable. The suggested strategies can help both organizations and people keep their online actions safe and reduce the risk of DNS-based attacks.

域名系统（Domain Name System，DNS）是互联网体系的关键组成部分，其功能恰似网络通讯录。然而，DNS正日益成为黑客的攻击目标，他们试图利用其中的安全漏洞实施恶意行为。本研究梳理了近期发生的DNS攻击事件及其对企业与个人造成的影响，探讨了DNS安全在降低网络风险层面的核心作用，并提出了优化DNS安全的可行方案。
本文首章详述了当前主流的DNS攻击类型，包括DNS缓存投毒（DNS cache poisoning）、分布式拒绝服务（Distributed Denial of Service，DDoS）攻击以及DNS劫持（DNS hijacking）。通过对这些攻击手段的分析，阐明了其对互联网安全与稳定性的破坏机制，以及此类攻击可能干扰关键基础设施、造成重大经济损失的潜在风险。
随后，本文探讨了各类DNS防护技术，如DNS安全扩展协议（DNSSEC）、基于传输层安全的DNS（DNS-over-TLS）以及基于超文本传输安全协议的DNS（DNS-over-HTTPS）。文中分析了每种防护方案的优缺点，以及其大规模普及的可行性。
最后，本文提出了一种多层级的DNS安全防护框架，该框架融合了技术解决方案、组织管理制度与实践规范。建议的策略包括部署DNSSEC及其他DNS安全协议、引入网络监控与威胁检测工具，以及制定针对DNS类攻击的应急备份预案。
总体而言，本研究论证了DNS安全对于抵御网络威胁、维护互联网的真实性与可靠性的重要意义。所提出的防护策略可助力企业与个人保障其线上行为的安全性，降低DNS类攻击带来的风险。