Data Breach Notifications

Entity Information

  • Type of Organization: Other Commercial
  • Entity Name: Arch Capital Services LLC
  • Street Address: 360 Hamilton Ave Suite 600
  • City: White Plains
  • State, or Country if outside the US: New York
  • Zip Code: 10601

Submitted By

  • Name: Michael Bahar
  • Title: Partner
  • Firm name (if different than entity): Eversheds Sutherland
  • Telephone Number: 2023830882
  • Email Address:
  • Relationship to entity whose information was compromised: Attorney

Breach Information

  • Total number of persons affected (including residents): 7036
  • Total number of Maine residents affected: 2
  • If the number of Maine residents exceeds 1,000, have the consumer reporting agencies been notified:
  • Date(s) Breach Occured: 05/27/ 2023- 05/30/2023
  • Date Breach Discovered: 01/24/2024
  • Description of the Breach:
    • External system breach (hacking)
  • Information Acquired - Name or other personal identifier in combination with: Social Security Number

Notification and Protection Services

  • Type of Notification: Written
  • Date(s) of consumer notification: 01/25/2024
  • Copy of notice to affected Maine residents: Sample Notification to members - Delta Dental Data Breach - 2024.pdf
  • Date of any previous (within 12 months) breach notifications:
  • Were identity theft protection services offered: Yes
  • If yes, please provide the duration, the provider of the service and a brief description of the service: 24 Months; Kroll; Identity theft protection and credit monitoring