A serious warning against the illegal intrusion into my Website

I have just found that a great number of files in English and French illegally and secretly occupy the space of the English Part of my website. We cannot find them from the official entrance into my website. But I have just found them at the operating area. The contents seem to be about travel business or the like. I already informed the fact to my support company and am contacting the related partners to solve it. I warn those intruders to withdraw their files from the space of my website immediately! I will trace through the illegal sources to the end.

Youzheng Li, 2012, April, 20