On 2022-06-30 14:27:10, http://icb2015.ou.edu.vn/ was hacked by MR.4R21L and their team, Attacker Joker Mafia.The website is hosted by Viettel Group with IP 171.244.23.51, This website is utilizing Microsoft-IIS as its web server. In their attack, they exploited the security vulnerability in Other Server intrusion to breach the website. Below are the details of the hacking action carried out by MR.4R21L.