ALEXANDRIA, Va., Aug. 26 -- United States Patent no. 12,401,681, issued on Aug. 26, was assigned to AI SPERA INC. (Seoul, South Korea).

"Method and apparatus for finding hidden IP address in malicious site using DNS service" was invented by Dong Sik Choi (Seoul, South Korea) and Byung Tak Kang (Seoul, South Korea).

According to the abstract* released by the U.S. Patent & Trademark Office: "The present disclosure provides a method for finding a hidden IP address in a malicious site using a domain name system (DNS) service, which is executed by a computer. The method includes the operations of: collecting real IP addresses for servers based on a predefined service port; extracting a first IP address candidate group by performing banner filt...