[Important] If you have installed the unofficial tool “YNU-LMS-Extension”, please remove it.
After investigating the cause of the learning management system access failure that occurred after 2021/10/25, it was found that the cause is likely to be access using the following.
Unofficial tool released on GitHub from Friday, October 22, 2021:
Google Chrome extension "YNU-LMS-Extension"
This extension seems to be an extension that gets unimplemented assignment / test information and lists it in an LMS.
Accessing the LMS using Google Chrome with this extension installed puts a heavy load on the LMS and causes excessive access because the information on each lecture page is retrieved after login.
As a result, many other users will not be able to use the LMS.
Therefore, all students who have installed this extension "YNU-LMS-Extension" should remove it immediately.