BreachCensus

Tandem Diabetes Care, Inc.

HealthcareUnited States of America

Tandem Diabetes Care, Inc. is a healthcare organisation in California. It appears on the Massachusetts Attorney General breach-notification register, the California Attorney General breach-notification register and the Wisconsin DATCP data breach list with 1 confirmed incident (2 filings); the most recent notice was filed on March 17, 2020.

Headquarters
San Diego, United States
ISIN
US8753722037
LEI
549300JEPFOD0K4D3I05
Wikidata
Q22121872

Data as of September 6, 2026.

Confirmed incident

Filed in CA, WI and MA

The same incident was filed separately with 3 jurisdictions within a few days of each other (CA, WI and MA) — shown here as one incident.

Occurred
January 17, 2020
Disclosed
March 17, 2020

Timeline

  1. March 17, 2020
    Reported to regulator Regulator

    CA AG breach notification: an unknown number of California residents affected

    source
  2. March 17, 2020
    Reported to regulator Regulator

    WI AG breach notification: an unknown number of Wisconsin residents affected

    source
  3. March 17, 2020
    Reported to regulator Regulator

    MA AG breach notification: 99 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 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 ↗

What a Wisconsin notice means

Governed 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.

Wisconsin breach-notification register ↗

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 ↗