The request / response that are contrary to the Web firewall security policies have been blocked.

Detect time	2025-05-13 15:32:20
Detect client IP	10.152.1.160 (x-forward-for : 3.14.131.159 )
Detect URL	http://xn--o80bv3jg9o2sb.xn--kg-jz1j901a9vcw7s0ie.kr/data/course/20033_main_thumbnail_pc