United States of America
Premera Blue Cross is an organisation in Washington. It appears on the Washington State Attorney General breach-notification register, the Iowa Attorney General security breach notification list and the Wisconsin DATCP data breach list with 5 confirmed incidents; the most recent notice was filed on July 10, 2023.
Data as of September 6, 2026.
WA AG breach notification: 33,237 Washington residents affected
sourceGoverned 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.
WA AG breach notification: 36,211 Washington residents affected
sourceWA AG breach notification: 1,303 Washington residents affected
sourceIA AG breach notification: an unknown number of Iowa residents affected
sourceGoverned by Iowa Code §715C.2. Notice to the Attorney General is required within five business days of notifying consumers, for a breach requiring notification to more than 500 Iowa residents.
Note: no affected-count is published on this register.
WI AG breach notification: an unknown number of Wisconsin residents affected
sourceGoverned by Wis. Stat. §134.98. No state agency must be notified. Affected individuals must be told within 45 days, and the national credit bureaus too when 1,000 or more people are notified; DATCP lists breaches reported to it or found to affect Wisconsin consumers.
Note: the count is Wisconsin residents only when published, not a total; many notices do not include one.