HackingProfessional ServicesProfessional ServicesStolen CredentialsTargetedIdentity (basic)Government IDMediumContained

H & R BLOCK, INC.

bd_9cb9a3705ea1e0da · schema v1 · pii pii-v1

Severity

Medium

Discovered

—

Filed

May 8, 2019

To disclose

—

Affected

4state residents only

Confidence

66%

Full breach record for H & R BLOCK, INC. →10 incidents on file

H&R Block notified Montana residents of a data breach where unauthorized parties used stolen credentials from a non-H&R Block source to access MyBlock accounts containing tax return data (names, SSNs, DOBs) between March 1-23, 2019. H&R Block revoked access and offered 12 months of identity protection.

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Incident timeline

Mar 1, 2019

Begins

May 8, 2019

Filed

Tracked as a single-filing incident — the only disclosure on record for this event so far.Confirmed4 affectedView incident

Name: H & R BLOCK, INC.
norm: h r block

Name: H & R BLOCK, INC.
norm: h r block
Industry: Professional Servicesllm

Discovered: —
Breach occurred: Mar 1, 2019 – Mar 23, 2019
Materiality determined: —
Notification sent: —
Affected individuals: 4state-resident count only
Data types: Identity (basic)Government ID
Data elements: Social Security numberDate of birth
Attack vector: Unauthorized Access
MITRE ATT&CK: T1078 Valid Accounts
Threat actor: ExternalFinancial
Initial access: valid_credentials

During the incident: Revoked the unauthorized access
Prevented any further exposure of your information
Arranged for you to receive 12 months of identity protection under the AllClear ID Pro at no cost to you
Source: Quoted from the filing itself, not independently verified.

Compliance flags: — (clock not assessable for this source)

Status: No extraction artifact recorded for this disclosure.

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://dojmt.gov/wp-content/uploads/OCP/CON-Notification-Letter.pdf
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: May 8, 2019
Raw hash: 61d5d35e468d10e5a78d1637f6f44fb7e8a8c439c869959d5b1a4cad1087489c

Reporting entityH & R BLOCK, INC.

Victim entityH & R BLOCK, INC.

IncidentUnauthorized Access

Stated responseRevoked the unauthorized access

Complianceclock not assessable

Extraction provenanceno artifact recorded

Source provenancedojmt.gov