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

Detect time	2025-05-13 15:43:09
Detect client IP	10.152.1.112 (x-forward-for : 18.219.224.246 )
Detect URL	http://xn--o80bv3jt0q.xn--kg-jz1j901a9vcw7s0ie.kr/data/course/7_main_thumbnail_pc