The unseen guardian: A research paper on the critical role of content delivery networks in internet security

Uppu, Sree Priyanka (2025) The unseen guardian: A research paper on the critical role of content delivery networks in internet security. World Journal of Advanced Engineering Technology and Sciences, 15 (2). pp. 1882-1891. ISSN 2582-8266

Content Delivery Networks (CDNs) have transcended their original purpose of optimizing internet performance to become essential guardians in the cybersecurity landscape. While initially designed to enhance content delivery by reducing latency and improving user experience, these geographically distributed networks now serve as critical defense mechanisms against an evolving array of cyber threats. The distributed architecture of CDNs inherently provides a robust security foundation, dispersing attack surfaces and absorbing malicious traffic that would otherwise overwhelm traditional infrastructure. This protective capability manifests through three primary mechanisms: Distributed Denial of Service (DDoS) mitigation that shields against volumetric attacks, Web Application Firewalls (WAFs) that inspect and filter malicious requests at the application layer, and sophisticated bot management systems that differentiate between legitimate and harmful automated traffic. Together, these mechanisms form a comprehensive security framework that safeguards digital assets, maintains service availability, and preserves user experience amid increasingly sophisticated cyber threats.