On 2023-01-11 09:35:00, https://kin.perpusnas.go.id/css//rip.html was hacked by MR.4R21L and their team, Attacker Joker Mafia.The website is hosted by Perpustakaan Nasional RI with IP 103.28.21.3, This website is utilizing Apache as its web server. In their attack, they exploited the security vulnerability in Web Server external module intrusion to breach the website. Below are the details of the hacking action carried out by MR.4R21L.