The Problem with Static Blocklists
Malicious ads on Google Ads rarely land directly on a known bad domain. Instead, they route through a chain of redirects that rotates domains faster than blocklists can update. When attackers register a fresh domain, let it sit for a few hours, and then point users to it via a series of 302 redirects, even legitimate ad platforms can abuse this technique.
Static blocklists fail because they only check the final destination. An attacker can create a new domain, run it briefly, and move on before your list refreshes. By the time the entry is added, the domain has already been used enough times to appear benign. This creates a persistent blind spot that security tools miss.
What You Will Learn
How to trace a multi-hop redirect chain and record timing per hop
