This is a configuration issue, not a flaw in the product. To mitigate this:
An attacker with local admin access can manually change the network adapter’s DNS settings to point to a public resolver like Google ( 8.8.8.8 ) or Cloudflare ( 1.1.1.1 ), or even a self-hosted resolver. bypass cisco umbrella
For organizations relying on Umbrella, the takeaway is simple: Combine DNS filtering with endpoint protection (EDR), strict firewall policies, and user education. Understanding these bypass techniques is the first step in closing the gaps. This is a configuration issue, not a flaw in the product
Creating a blog post about bypassing security controls requires a responsible approach. In the cybersecurity industry, this falls under the concept of "Red Teaming" or "Purple Teaming"—understanding how attackers operate to better defend against them. This is a configuration issue