The warning has also appeared on a couple of the other sites I visit and has been on most pages of UM (not just the forum).
The only thing I’ve found in common is that the warning only seems to appear on pages which usually contain external content and links such as found in Google ads - pages I have looked at on sites with little or no external content (such as BBC News) do not carry the warning.
The McAfee Site Advisor icon for UM is green and the Site Advisor report for UM states “We tested this site and didn't find any significant problems”.
While I haven’t changed any security settings it has only occurred since running CCleaner yesterday, I’m wondering whether this may be unique to my machine with some kind of interaction or conflict from running CCleaner, one of the regular updates from McAfee and/or my other security settings
