Abstract

Theft of sensitive or regulated data and intellectual property is one of the most serious risks to an enterprise. According to a recent DNS security survey of businesses based in North America and Europe, 46% of respondents experienced DNS exfiltration and 45% experienced DNS tunneling. DNS port 53 is frequently used as a pathway for data exfiltration because it's not inspected by common security products such as firewalls, intrusion-detection systems (IDSs), and proxies.

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