Dear Fi1osof,
Thank you so much for your quick reply!
No problem. I did not know MODX is one of CMSs and this site is for MODX. Sorry.
Anyway, I think their purpose is the same because the file name and code are similar to my case.
I am very concerned about the possibility of information leakage by the hacking to us.
In your case did you check if there was a leak?
I'm collecting information, so I'm glad if you can tell me on this.
I apologize for the inconvenience.
Best,
Sicily