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

Detect time	2025-05-13 10:14:26
Detect client IP	10.152.1.112 (x-forward-for : 3.142.144.163 )
Detect URL	http://xn--kg-j96is77cveb.kr/data/course/20052_main_thumbnail_pc