Why did mikrotik start ssh without a password, and writes that the password has been hacked?

Question

SSH

A simple password was deliberately set on the router. And after a while, the router began to start up without asking for a password at the entrance.
How could this happen?

Answer 1

Routeros 6.20 was released in 2014. The front yard is your Mikrotik right now.

Answer 2

Check /system note print. Probably, there you will find your message with "DEVICE HACKED ..."
Considering that "A simple password was deliberately set on the router ...", it is quite obvious that the password was picked up, removed for the "admin" account and left a message in the section "/system note".
case solved)

Answer 3

A simple password is simple because it is most likely to be found in the dictionaries of various kinds of hacker tools.

Answer 4

Apparently because it was actually hacked :) Mikrotik is a very popular device - and with popularity comes one thing - everyone starts trying to do something nasty :) Here the hackers turned out to be polite - they wrote honestly :)

Answer 5

Close access from outside, update the firmware to the latest one, disable the admin user and create a more complex password.

Answer 6

So the RouterOS version is 6.20. Of course they will hack it, up to 6.41, if I'm not mistaken, there are exploits. You were hacked, and they wrote that you were hacked. So that you finally pay attention to this.