HackingTechnologyInformationStolen CredentialsData ExfiltratedCustomer Data InvolvedGenetic / health-sensitiveIdentity (basic)LocationBehaviorMetadataMediumActive

23andMe Holding Co.

bd_983bec69f67e0ced · schema v1 · pii pii-v1

Severity

Medium

Discovered

Oct 1, 2023

Filed

Dec 15, 2023

To disclose

11 weeks

Affected

Not disclosed

Linked

5 filings

Confidence

65%

Full breach record for 23andMe Holding Co. →

23andMe, Inc. notified Delaware residents of a credential stuffing attack occurring between May and September 2023. A threat actor accessed optional DNA Relatives profile data, including ancestry reports, DNA segments, and personal details, which was posted to BreachForums. 23andMe reset passwords, enforced two-factor authentication, paused features, and engaged law enforcement and forensic experts.

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Incident timeline

undetected · 153 days

discovery → filing · 11 weeks / 75 days

May 1, 2023

Begins

Oct 1, 2023

Discovered

Dec 15, 2023

Filed

vs. sector median

on median

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

SEC 8-Kbd_c6928174f9265a872023-12-01 · +14dVerified
California State AGbd_29c164e09dc57f932024-01-21 · +37dVerified
Delaware State AGbd_ab14d4ca29340e512023-10-10 · +66dVerified
SEC 8-Kbd_cd8db4669b886a802023-10-10 · +66dVerified

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

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

Discovered: Oct 1, 2023
Breach occurred: May 1, 2023 – Sep 1, 2023
Undetected for: 153 daysoccurrence → discovery
Materiality determined: —
Notification sent: Dec 1, 2023
Affected individuals: Not disclosed
Data types: Identity (basic)Government IDGenetic / health-sensitive
Attack vector: Unauthorized Access
MITRE ATT&CK: T1078 Valid AccountsT1119 Automated Collection
Threat actor: ExternalFinancial
Regulator citations: Working with federal law enforcement
Initial access: valid_credentials

During the incident: Engaged third party incident response experts
Working with 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: Working with third-party security experts on this investigation
Continuing to invest in protecting our systems and data
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 11 weeks(75 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 · this page

California State AG+103d

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://attorneygeneral.delaware.gov/wp-content/uploads/sites/50/2023/12/23andMe-Delaware-Notification-Template.pdf
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Dec 15, 2023
Raw hash: c97fb57e69c6e7c0374a9fa58283defe0364c758902eacc5a71d1cb9e1fc96fb

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

Complianceclock not assessable

Extraction provenanceno artifact recorded

Source provenanceattorneygeneral.delaware.gov