This!
To make it extremely simple;
#Step 1: Navigate to the Folder Containing the Password Failure Logs
cd /var/log/pwfail
#Step 2: Inspect the Log File Manually
#You can manually inspect the log file to view the dates and times of failed login attempts.
nano <IP_ADDRESS_OF_DEVICE>
#Step 3: Delete the Log File
#If you wish to delete the log file, use the following command:
rm <IP_ADDRESS_OF_DEVICE>