I, too, am having this issue.
Windows 10 Pro Version 1803 (OS Buuld 17134.137)
Chrome Version 67.0.3396.99 (Official Build) (64-bit)
ESET Endpoint Antivirus 6.6.2068.0
SSL/TLS filtering is not enabled.
Otherwise seems to be using default settings.
I am not inclined to remove ESET, no matter what Chrome says. I will live with the warning as long as I can; if it becomes more obtrusive, bye-bye Chrome.