USA Flag appears in the menu bar! What is this about?
Using Safari 13.1 on Mojave OS 10.14.6
A ping sound that indicates that mail has arrived happened and an icon of a US flag appeared in the right side of the top most menu bar on the left of the date/time.
Checked mail and nothing unusual in the inbox; checked Safari history and nothing that I didn't recognize attending was there; closed Safari and on reopening it the icon of the American flag was not there.
Is this some kind of infiltration/spam? Are others experiencing it also?