JYJ Yoochun's fans cross the border by installing a CCTV in front of his house.

On July 10 on an online community board, a title with, "Stalker (Sasaeng) fans put up CCTV in front of Yoochun's house," was seen along with a photo.

In the CCTV capture photo, Yoochun is seen lurking the corners and keeping an eye out as he walks around the parking lot. He had proved that some fans had indeed installed a CCTV camera at his house.

Internet users commented, "I have goosebumps", "A personal CCTV? That's scary" and "This is something you shouldn't do if you are a true fan."

Last March, JYJ was accused for cursing to their fans through a voice file, which caused them much pain. However, this act was much more shocking, surprising many fans.