I am using the latest version of Firefox and the latest version of Avast and I am the same user who reported another 'Threat Pop-Up' last week.
This time, I did a Google search for a property management company and clicked on the link result.
Avast detected it as a threat and blocked it.
After that, I typed in the website URL manually and Firefox stated that it was 'Having trouble finding that site.'
I copied and pasted the website link to my Opera browser and it opened without issue. I went back to Firefox and copied and pasted the website link and it opened without issue.
The specific website is
www.atira.ca.
*Why did Avast recognize the website as a threat? Based on this experience and the one last week, Avast seems to be oversensitive to certain legitimate websites but then unblocks them just as quickly.