HackingData ExfiltratedCustomer Data InvolvedMulti-Stage ChainGenetic / health-sensitiveIdentity (basic)LocationBehaviorMediumActive

23andMe Holding Co.

bd_ab14d4ca29340e51 · schema v1 · pii pii-v1

Severity

Medium

Discovered

Oct 1, 2023

Filed

Oct 10, 2023

To disclose

9 days

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 2023 and September 2023. A threat actor used compromised credentials to access accounts linked to the optional DNA Relatives feature, exposing ancestry data, DNA segments, and profile information. 23andMe engaged forensic experts, required password resets and two-step verification, and is working with federal law enforcement.

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Incident timeline

undetected · 153 days

discovery → filing · 9 days

May 1, 2023

Begins

Oct 1, 2023

Discovered

Oct 10, 2023

Filed

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

Linked disclosures

Why this link?

Regulatory filings (4) · sorted by filing gap

SEC 8-Kbd_cd8db4669b886a802023-10-10Verified
SEC 8-Kbd_c6928174f9265a872023-12-01 · +52dVerified
Delaware State AGbd_983bec69f67e0ced2023-12-15 · +66dVerified
California State AGbd_29c164e09dc57f932024-01-21 · +103dVerified

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

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

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: Implemented two-step verification for all new and existing customers
Investing in protecting systems and data
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 9 days(9 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 ↗

SEC 8-KOct 10 · first

Delaware State AGOct 10 · first · this page

SEC 8-K+52d

Delaware State AG+66d

California State AG+103d

Pattern: first filing Oct 10, 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: Oct 10, 2023
Raw hash: 9fa06f0edc10b638c32310031e502aff865d8f50b7ae862724a79de121b754a6

Linked disclosures

Regulatory filings (4) · sorted by filing gap

Reporting entity23andMe Holding Co.

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