DisclosureLens
AccidentalHealthcareHealthcareMisdeliveryCustomer Data InvolvedPHIHealth (basic)Identity (basic)FinancialLowResolved

Kaiser Foundation Healthplan, Inc. of Southern California

bd_2033139fa7273655 · schema v1 · pii pii-v1

Severity

Low

Discovered

Nov 1, 2019

Filed

Feb 28, 2020

To disclose

17 weeks

Affected

Not disclosed

Confidence

65%
Full breach record for Kaiser Foundation Healthplan, Inc. of Southern California →3 incidents on file

Kaiser Health Plan, Southern California notified members that an error during a mailing address improvement project caused correspondence to be sent to former addresses between October 6 and December 20, 2019. The error was discovered on November 1, 2019. Affected mailings may have included demographic information, medical information (diagnosis, medication), billing information, and health insurance information. Social Security numbers and credit card information were not included. The organization conducted an investigation, corrected addresses, and is developing staff training to prevent recurrence.

Incident timeline

undetected · 26 days
discovery → filing · 17 weeks / 119 days

Oct 6, 2019

Begins

Nov 1, 2019

Discovered

Feb 28, 2020

Filed

vs. sector median

+4 wks slower

Tracked as a single-filing incident — the only disclosure on record for this event so far.ConfirmedView incident

Evidence ladder

Leak-site claim

Attacker assertion only. Establishes: claim date, group, alleged victim.

Press / market report

Unlocks: incident narrative, operational impact. Still no compliance clock.

State AG / regulator filingThis record

Unlocks: discovery date, data types, affected count, compliance clock.

SEC 8-K / victim statement

Unlocks: materiality, stated response, full audit trail. Ceiling removed.