You can temporarily block login to Kintone, when a user continuously failed to enter correct login name or password (Account Lockout).
This helps you prevent unauthorized logins from external third parties.

1. Click in the header.

2. Click "Users & System Administration".
   Accessing Kintone Users & System Administration

3. Click Login.

4. Select the number of failed login attempts before account lockout. A user can no longer log in to the service when the number of failed login attempts exceeds the value specified here.
   For details on the default value of failed login attempts, refer to "Other Default Values".
   

5. Specify the time to unlock the locked-out account. If you set "Account Lockout Duration" (how long locked out accounts remain locked out) to "Never unlock", the account is locked out forever. In this case, Kintone Users & System Administrator should manually change the user's password.
   For the default value of Account Lockout Duration, refer to "Other Default Values".

6. Click Save.