HIKVISION DS-2CD6425G1-20 - 2.3.3 Illegal Login Lock

2.3.3 Illegal Login Lock
It helps to improve the security when accessing the device via Internet.
The admin user can set the login  with the wrong password. When your login 
with the wrong password reach the set  the device is locked.
Go to  → System → Security → Security Service , and enable Enable Illegal Login
Lock, and set the illegal login 
Network Camera User Manual
5