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

Detect time	2025-05-13 14:08:34
Detect client IP	10.152.1.160 (x-forward-for : 3.19.244.116 )
Detect URL	http://gw.xn--kg-xm7ji6e9xw.kr/data/course/18_main_thumbnail_pc