Home › Organisations › Unum Group Unum Group is an insurance organisation in Massachusetts. It appears on the Massachusetts Attorney General breach-notification register, the California Attorney General breach-notification register, the Washington State Attorney General breach-notification register and the Delaware Attorney General data security breach database with 7 confirmed incidents (8 filings); the most recent notice was filed on September 19, 2023.
Headquarters Chattanooga, United States ISIN US91529Y1064 LEI 549300E32YFDO6TZ8R31 Wikidata Q143435 Data as of October 17, 2026.
Disclosed September 19, 2023 Timeline September 19, 2023
Reported to regulator Regulator MA AG breach notification: 320 Massachusetts residents affected
source Litigation Possible litigation — multiple candidate dockets found, not yet resolved to a single case. What a Massachusetts notice means Governed by M.G.L. c. 93H . Notice to the Attorney General is required for a breach affecting any number of Massachusetts residents' personal information -- the statute sets no minimum count.
Note: the count is Massachusetts residents only, not a total.
Massachusetts breach-notification register ↗
Confirmed incident Filed in WA and CA — Hacking/IT Incident The same incident was filed separately with 2 jurisdictions within a few days of each other (WA and CA) — shown here as one incident.
Occurred May 31, 2023 Disclosed August 21, 2023 Timeline August 21, 2023
Reported to regulator Regulator WA AG breach notification: 4,186 Washington residents affected
source September 19, 2023
Reported to regulator Regulator CA AG breach notification: an unknown number of California residents affected
source Litigation Possible litigation — multiple candidate dockets found, not yet resolved to a single case. What a Washington notice means Governed by RCW 19.255.010 . Notice to the Attorney General is required when a breach affects more than 500 Washington residents.
Note: the count is Washington residents only, not a total.
Washington breach-notification register ↗
What a California notice means Governed by Cal. Civ. Code §1798.82 . A copy of the notification must be sent to the Attorney General when a single breach requires notifying more than 500 California residents.
Note: no affected-count is published on this register.
California breach-notification register ↗
Disclosed November 11, 2022 Timeline November 11, 2022
Reported to regulator Regulator MA AG breach notification: 15 Massachusetts residents affected
source Litigation Possible litigation — multiple candidate dockets found, not yet resolved to a single case. Confirmed incident Filed in MA and DE The same incident was filed separately with 2 jurisdictions within a few days of each other (MA and DE) — shown here as one incident.
Occurred October 28, 2021 Disclosed January 31, 2022 Timeline January 28, 2022
Reported to regulator Regulator DE AG breach notification: 537 Delaware residents affected
source January 28, 2022
Reported to regulator Regulator DE AG breach notification: 537 Delaware residents affected
source January 28, 2022
Reported to regulator Regulator DE AG breach notification: 537 Delaware residents affected
source January 31, 2022
Reported to regulator Regulator MA AG breach notification: 210 Massachusetts residents affected
source Litigation Possible litigation — multiple candidate dockets found, not yet resolved to a single case. Possible litigation — multiple candidate dockets found, not yet resolved to a single case. What a Delaware notice means Governed by 6 Del. C. §12B-102 . Notice to the Attorney General is required when a breach affects more than 500 Delaware residents.
Note: the count is Delaware residents only, not a total.
Delaware breach-notification register ↗
Disclosed October 2, 2020 Timeline October 2, 2020
Reported to regulator Regulator MA AG breach notification: 10 Massachusetts residents affected
source Litigation Possible litigation — multiple candidate dockets found, not yet resolved to a single case. Disclosed December 24, 2019 Timeline December 24, 2019
Reported to regulator Regulator MA AG breach notification: 13 Massachusetts residents affected
source Occurred December 13, 2014 Disclosed January 10, 2014 Timeline January 10, 2014
Reported to regulator Regulator DE AG breach notification: an unknown number of Delaware residents affected
source January 10, 2014
Reported to regulator Regulator DE AG breach notification: an unknown number of Delaware residents affected
source January 10, 2014
Reported to regulator Regulator DE AG breach notification: an unknown number of Delaware residents affected
source