Search Engine Optimization (SEO) is widely known as a digital marketing practice used to improve website visibility in search engine results. However, the techniques used in SEO can also support activities beyond marketing. In the domains of cybersecurity and digital intelligence, SEO techniques often intersect with Open-Source Intelligence (OSINT) and, in some cases, cybercrime operations. Understanding this relationship is important for cybersecurity professionals, investigators, and organizations seeking to mitigate digital threats.