Is there a reason for concern?

A see a connection to -apps.digsigtrust.com in my browser
(probably related to a now deleted ics phishing spam flagged as junk spam);
anyone on this and how could it be connected to ics online scam and phishing spam?
See: https://mxtoolbox.com/domain/apps.digsigtrust.com/
and https://whois.domaintools.com/digsigtrust.com
misconfigured and abusable: https://www.htbridge.com/websec/?id=023f3855b3e7316664f0f4b0e697074ce59edeb68bb5d2fe1b3cac66e6cdba0d
Blocked as unsafe by Google Safebrowsing: -https://digsigtrust.com/
I see alerts for suspicious javascript malcodeā€¦

Anyone?

polonus