Question: Your tenant domain was flagged by Avast?
Answer:
There are times where Avast will miss categorize a tenant domain ( example: sample.us.auth0.com) as URL:Phishing.
As suggested by Avast the first step is to check against Virus Total’s website for any known issues to ensure it’s clean. After which Avast suggests adding the website to Avast’s whitelist as an exception.
Supporting Documentation:
Documentation: Avast Website Exception 2019, Virustotal.com