Hello,
I just recently upgraded from 8.3.2 to 9.1P20 and started to see these alert messages being sent.
Message: security.invalid.login: Failed to authenticate login attempt to Vserver: <Name>, username: admin, application: ontapi.
Description: This message occurs when an attempt is made to access the appliance by using invalid authentication credentials.
I'm sure there was a change in the upgrade, however how do I narrow down what's causing this issue?