HackingHealthcareTechnologyHealthcareStolen CredentialsCapture Stored DataData ExfiltratedCustomer Data InvolvedDelayed DiscoveryIdentity (basic)Health (basic)PHILowContained

Dendreon

bd_d555d7931877c68f · schema v1 · pii pii-v1

Severity

Low

Discovered

Feb 21, 2024

Filed

May 23, 2024

To disclose

13 weeks

Affected

920state residents only

Linked

3 filings

Confidence

69%

Full breach record for Dendreon →

Dendreon Pharmaceuticals LLC, a healthcare entity, experienced a data breach via its third-party vendor The Lash Group, LLC. Unauthorized access and exfiltration of PHI and PII (names, DOB, diagnoses, prescriptions) occurred. 920 Washington residents affected. Discovered Feb 21, 2024; notified May 23, 2024. Credit monitoring offered.

J jump to incidentP pin to compareR raw source

Washington clock⏱ WA AG >30d13 weeks discovery → filing

Incident timeline

discovery → filing · 13 weeks / 92 days

Feb 21, 2024

Discovered

May 23, 2024

Filed

vs. sector median

+1 wks slower

This filing is one of 3 about the same incident.View merged incident

Linked disclosures

Why this link?

Regulatory filings (2) · sorted by filing gap

Montana State AGbd_492222c3bc2256c32024-05-23Candidate
Indiana State AGbd_c15b88c2014ce46c2024-05-23Verified

Name: The Lash Group, LLC
norm: lash group
Domain: dendreon.com

Name: Dendreon
norm: dendreon
Domain: dendreon.com
Industry: HealthcarellmTechnologyllm

Discovered: Feb 21, 2024
Materiality determined: —
Notification sent: May 23, 2024
Affected individuals: 920state-resident count only
Data types: Identity (basic)Health (basic)PHI
Data elements: NameDate of birthMedical information
WA-stated cause: Cyberattack
WA-stated duration: lifecycle 1-99dexposure 0d
WA-stated discovery: Found after the fact
Attack vector: Unknown
MITRE ATT&CK: T1041 Exfiltration Over C2 ChannelT1486 Data Encrypted for Impact
Threat actor: ExternalFinancial
Regulator citations: Notified Washington Attorney General
Initial access: valid_credentials

During the incident: Engaged third-party cyber experts to conduct an investigation
Taken steps to strengthen the security of its systems
Launched an investigation with the assistance of cybersecurity experts, law enforcement, and outside lawyers
Sent notifications by mail to affected individuals
Offered two years of credit monitoring through Experian IdentityWorks
Changes made: Strengthened the security of its systems
Working with cybersecurity experts to reinforce systems and information security protocols
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 13 weeks(92 days from discovery to filing)
Compliance flags: WA AG >30d
Discovery-date grounding: letter-groundedThe discovery date is the detection date narrated in the notification letter — the defensible tier.

Status: No extraction artifact recorded for this disclosure.

Filing propagation · 3 filings · 3 states

View merged incident ↗

Montana State AGMay 23 · first

Indiana State AGMay 23 · first

Washington State AGMay 23 · first · this page

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://agportal-s3bucket.s3.amazonaws.com/databreach/BreachA29243.pdf
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: May 23, 2024
Raw hash: b2a2f363d444eaa43fa4fd63aab44317e7f1dfdb57c917225f15094dd7139a37

Linked disclosures

Regulatory filings (2) · sorted by filing gap

Reporting entityThe Lash Group, LLC

Victim entityDendreon

Incidentdiscovered Feb 21, 2024

Stated responseEngaged third-party cyber experts to conduct an investigation

ComplianceWA AG >30d

Extraction provenanceno artifact recorded

Source provenanceagportal-s3bucket.s3.amazonaws.com