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

Detect time	2025-05-13 21:25:05
Detect client IP	10.152.1.112 (x-forward-for : 18.218.231.183 )
Detect URL	http://xn--kg-jz1j901a9vcw7s0ie.xn--kg-j96is77cveb.kr/data/course/20047_main_thumbnail_pc