Little Snitch revealed today:
Connection report for process: AirPort Basstationsagent (/System/Library/CoreServices/AirPort Base Station Agent.app)
Total: 192 Bytes sent, 15.9kB received
b.scorecardresearch.com (22.214.171.124), Port 80 (http), Protocol 6 (TCP), 192 Bytes sent, 15.9kB received
First time I observe this. I have denied this connection in the future.
Googling reveals no help or explanation.
Retrieving data ...