Explore DNS exfiltration techniques and learn how to mitigate this overlooked security threat in this 43-minute conference talk from NDC Security 2023. Discover why DNS exfiltration is a significant concern for organizations with strict firewall policies and understand the challenges of implementing DNS allowlisting at the IP layer. Gain insights into how hackers exploit DNS for data exfiltration and learn a practical solution using a dnsmasq sidecar to enhance application security. Dive into the demonstration of both attack and defense strategies, equipping yourself with valuable knowledge to protect your systems against this subtle yet powerful attack vector.