Login Attempt Fail notifications

I recently updated the Pi-4 OS to 11.3 and HA core to 2024.1.2

I was using Firefox browser to login. But to use ESPHome OTA programming, I started using MS Edge browser as Firefox was ‘not supported’.

The log shows these (16,000+ !) started on 7-1-2024 which is probably when I did the above.
I don’t know the exact timeline.

Searching for ‘Login Attempt Fails Notifications’ produces dozens of hits spanning a long period.
Some had success with clearing the browser history etc.

I’ve tried that with no success.

Any ideas as how to stop the messages?