Quantum Health, Inc. is an 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 Texas Attorney General breach-notification register with 4 confirmed incidents; the most recent notice was filed on August 18, 2026.
The same incident was filed separately with 2 jurisdictions within a few days of each other (TX and CA) — shown here as one incident.
“Our investigation determined that the service outage was related to unauthorized access to our IT network, resulting from a user responding to a vishing call on May 29, 2026.”
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.
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.