I have Mikrotik RouterOS v3.22 Lv6. I have hotspot user accounts. I notice that some of the user login without username and password and they stay online even after I disabled their accounts. How to check that all people connected to internet are legal hotspot users and there is no hackers
Please, post the output from /ip hotspot active print for the user without username.
Make sure you do not have MAC-address authentication enabled on HotSpot.