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

Detect time	2025-05-13 18:58:04
Detect client IP	10.152.1.160 (x-forward-for : 3.137.198.25 )
Detect URL	http://xn--oi3bn8n8wbba250am4k7qcfvh.xn--kg-j96is77cveb.kr/data/course/20102_main_thumbnail_pc