Is Self Service repeatedly asking for your password? This very persistent pop-up is a known macOS bug related to Self Service. It is not malicious.
To make it go away:
Enter your computer password
Click Always Allow
Submit a ticket
You can expect a response via email within one business day
Walk-in Tech Support
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Call us at 212-570-8501 or x8501
Monday-Friday: 8am-4:30pm