Безопасно
WinBox.exe is signed with an Extended Validation certificate, issued by SIA Mikrotīkls (MikroTik).
WinBox uses ECSRP for key exchange and authentication (requires a new WinBox version).
Both sides verify that the other side knows the password (no man in the middle attack is possible).
WinBox in RoMON mode requires that the agent is the latest version to be able to connect to the latest version routers.
WinBox uses AES128-CBC-SHA as an encryption algorithm (requires WinBox version 3.14 or above).