Hello, today I've created a new private study and someone entered in it. How this is possible?
I'm not sure; I see no studies listed under
http://en.lichess.org/study/by/TheBuggerThanks for the answer,
Yes that's the point... The studies are privates so I don't know how someone has entered in it.
When I've made the study, and I'm sure 100% that it was private, an anonymous has been able to join the study.