HackingHealthcareTechnologyHealthcareStolen CredentialsSupply Chain (3P Vendor)Data ExfiltratedCustomer Data InvolvedPHIIdentity (basic)Health (basic)LowContained

Insulet Corporation

bd_a9a5e74719a5088f · schema v1 · pii pii-v1

Severity

Low

Discovered

Jan 19, 2021

Filed

Mar 19, 2021

To disclose

8 weeks

Affected

Not disclosed

Linked

4 filings

Confidence

64%

Full breach record for Insulet Corporation →8 incidents on file

Insulet Corporation notified customers of a data security incident involving its vendor, Cornerstone On-Demand. An unauthorized third party gained access to Cornerstone's systems on January 13, 2021, potentially accessing and downloading customer names, email addresses, and training records. Insulet discovered the incident on January 19, 2021, when notified by the vendor. Cornerstone blocked access and implemented security measures. Insulet is transitioning to a new vendor and will require deletion of data.

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California clockDiscovered Jan 19, 2021 → Notified Mar 18, 202158d ✓ CA 60-day OK8 weeks discovery → filing

Incident timeline

undetected · 6 days

discovery → filing · 8 weeks / 59 days

Jan 13, 2021

Begins

Jan 19, 2021

Discovered

Mar 19, 2021

Filed

vs. sector median

4 wks faster

This filing is one of 4 about the same incident.View merged incident

Linked disclosures

Why this link?

Regulatory filings (3) · sorted by filing gap

HHS OCRbd_ec64490fbdd5840b2021-03-19Verified
Montana State AGbd_dc53fa22a54060f92021-03-18 · +1dVerified
Illinois State AGbd_075e4e452f3484bd2021-01-01 · +77dCandidate

Name: Insulet Corporation
norm: insulet
Domain: insulet.com

Name: Insulet Corporation
norm: insulet
Domain: insulet.com
Industry: HealthcarellmTechnologyllm

Discovered: Jan 19, 2021
Breach occurred: Jan 13, 2021
Undetected for: 6 daysoccurrence → discovery
Materiality determined: —
Notification sent: Mar 18, 2021
Affected individuals: Not disclosed
Data types: PHIIdentity (basic)Health (basic)
Attack vector: Third-Party / Supply Chain
MITRE ATT&CK: T1078 Valid AccountsT1041 Exfiltration Over C2 Channel
Threat actor: External
Third party: via Cornerstone On-Demand
Initial access: trusted_relationship

During the incident: Cornerstone blocked the unauthorized third party’s access to Cornerstone’s system
Cornerstone implemented additional security measures to reduce the likelihood of success of another attack
Insulet has begun transitioning online courses to another vendor’s platform
Insulet will require that Cornerstone delete all Insulet customer data once that transition is complete
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 8 weeks(59 days from discovery to filing)
Compliance flags: CA 60-day OK · 58d
Discovery-date grounding: letter-groundedThe discovery date is the detection date narrated in the notification letter — the defensible tier.
Clock breakdown: Statute Window Elapsed Threshold Status
California
Discovered: Jan 19, 2021
→ Notified: Mar 18, 2021
58d 60 days (analyst band, pre-2026 discoveries) CA 60-day OK

Statute	Window	Elapsed	Threshold	Status
California	Discovered: Jan 19, 2021 → Notified: Mar 18, 2021	58d	60 days (analyst band, pre-2026 discoveries)	CA 60-day OK

Status: No extraction artifact recorded for this disclosure.

Filing propagation · 4 filings · 4 states

View merged incident ↗

Illinois State AGJan 1 · first

Montana State AG+76d

HHS OCR+77d

California State AG+77d · this page

Pattern: first filing Jan 1 (IL), last Mar 19 (CA) — a 77-day rolling notification. Rolling spreads often mean counsel is filing as thresholds trip per state. Why this link?

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.

Source URL: https://oag.ca.gov/ecrime/databreach/reports/sb24-539286
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Mar 19, 2021
Raw hash: e04ba2fef27925282e9add4086fe06e6a552d8323f4f0bc2c246354b6f31cf61

Linked disclosures

Regulatory filings (3) · sorted by filing gap

Reporting entityInsulet Corporation

Victim entityInsulet Corporation

Incidentdiscovered Jan 19, 2021

Stated responseCornerstone blocked the unauthorized third party’s access to Cornerstone’s system

ComplianceCA 60-day OK

Extraction provenanceno artifact recorded

Source provenanceoag.ca.gov