HackingHealthcareTechnologyHealthcareStolen CredentialsData ExfiltratedCustomer Data InvolvedGenetic / health-sensitiveHealth (basic)Identity (basic)LocationPIIMediumContained

23andMe Holding Co.

bd_29c164e09dc57f93 · schema v1 · pii pii-v1

Severity

Medium

Discovered

Oct 1, 2023

Filed

Jan 21, 2024

To disclose

16 weeks

Affected

Not disclosed

Linked

5 filings

Confidence

64%

Full breach record for 23andMe Holding Co. →

23andMe disclosed a credential stuffing attack occurring between late April and September 2023, discovered on October 1, 2023. Threat actors used compromised credentials to access customer accounts, exfiltrating DNA Relatives profile data, genetic health reports, and personal settings. The company engaged forensic experts, notified law enforcement, forced password resets, and mandated two-step verification.

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Incident timeline

undetected · 155 days

discovery → filing · 16 weeks / 112 days

Apr 29, 2023

Begins

Oct 1, 2023

Discovered

Jan 21, 2024

Filed

vs. sector median

+7 wks slower

This filing is one of 5 filings about the same incident.View merged incident

Linked disclosures

Why this link?

Regulatory filings (4) · sorted by filing gap

Delaware State AGbd_983bec69f67e0ced2023-12-15 · +37dVerified
SEC 8-Kbd_c6928174f9265a872023-12-01 · +51dVerified
Delaware State AGbd_ab14d4ca29340e512023-10-10 · +103dVerified
SEC 8-Kbd_cd8db4669b886a802023-10-10 · +103dVerified

Name: 23andMe Research Institute
norm: 23andme research institute
Domain: 23andmeresearchinstitute.org

Name: 23andMe Holding Co.
norm: 23andme holding
Domain: 23andme.com
Industry: HealthcarellmTechnologyllm

Discovered: Oct 1, 2023
Breach occurred: Apr 29, 2023 – Sep 27, 2023
Undetected for: 155 daysoccurrence → discovery
Materiality determined: —
Notification sent: —
Affected individuals: Not disclosed
Data types: Genetic / health-sensitiveHealth (basic)Identity (basic)LocationPII
Attack vector: Unauthorized Access
MITRE ATT&CK: T1078 Valid AccountsT1041 Exfiltration Over C2 Channel
Threat actor: External
Regulator citations: Contacted federal law enforcement
Initial access: valid_credentials

During the incident: Engaged third party incident response experts to assist in determining the extent of any unauthorized activity
Contacted federal law enforcement
Required all 23andMe customers to reset their password
Required all new and existing customers to login using two-step verification
Temporarily paused certain functionality within the 23andMe platform
Taking steps to have the re-posted DNAR Profile File removed from other websites
Changes made: Required all new and existing customers to login using two-step verification
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 16 weeks(112 days from discovery to filing)
Compliance flags: — (clock not assessable for this source)

Status: No extraction artifact recorded for this disclosure.

Filing propagation · 5 filings · 2 states

View merged incident ↗

Delaware State AGOct 10 · first

SEC 8-KOct 10 · first

SEC 8-K+52d

Delaware State AG+66d

California State AG+103d · this page

Pattern: first filing Oct 10 (DE), last Jan 21 (CA) — a 103-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/sb24-579679
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Jan 21, 2024
Raw hash: b41ea12d9d75d5dd71c83ea56c11f66a4c82e489433768b7bca156e7bb2a3300

Linked disclosures

Regulatory filings (4) · sorted by filing gap

Reporting entity23andMe Research Institute

Victim entity23andMe Holding Co.

Incidentdiscovered Oct 1, 2023

Stated responseEngaged third party incident response experts to assist in determining the extent of any unauthorized activity

Complianceclock not assessable

Extraction provenanceno artifact recorded

Source provenanceoag.ca.gov