Subject: Failed Login
Time: January 24, 2020 9:57 pm
IP Address: 188.8.131.52
User authentication failed: holidaytime2016
Explanation: Someone failed to login to your site. If you are getting too many of these messages, it is likely your site is under a password guessing brute-force attack . You can disable the failed login alerts from here . Alternatively, you can consider to install a firewall between your website and your visitors to filter out these and other attacks, take a look at Sucuri CloudProxy .