HackingFinancial ServicesProfessional ServicesFinanceStolen CredentialsCustomer Data InvolvedIdentity (basic)Government IDFinancial accountMediumContained

H&R Block

bd_1d95c96ac571a143 · schema v1 · pii pii-v1

Severity

Medium

Discovered

Aug 9, 2024

Filed

Dec 27, 2024

To disclose

20 weeks

Affected

Not disclosed

Linked

5 filings

Confidence

65%

H&R Block notified customers that an unauthorized third party used personally identifiable information obtained from external sources to access client accounts between May 13, 2024, and August 7, 2024. The incident was discovered on August 9, 2024. Affected data may include names, Social Security numbers, ITINs, government-issued ID numbers, financial account information, and dates of birth. H&R Block engaged third-party experts, terminated unauthorized access, and is offering 24 months of identity theft protection services.

J jump to incidentP pin to compareR raw source

California clockDiscovered Aug 9, 2024 → Notified Nov 26, 2024109d ✗ CA 60-day late20 weeks discovery → filing

Incident timeline

undetected · 88 days

discovery → filing · 20 weeks / 140 days

May 13, 2024

Begins

Aug 9, 2024

Discovered

Dec 27, 2024

Filed

vs. sector median

+12 wks slower

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

Massachusetts State AGbd_151afb34a6a389282024-12-27Verified
Washington State AGbd_981c4914b3bfe8e12024-12-19 · +8dVerified
Maine State AGbd_c0bc38fd204f3db02024-12-19 · +8dVerified
Montana State AGbd_5b24df076e62252a2024-10-03 · +85dCandidate

Name: HRB Tax Group, Inc.
norm: hrb tax

Name: H&R Block
norm: h r block
Industry: Financial ServicesllmProfessional Servicesllm

Discovered: Aug 9, 2024
Breach occurred: May 13, 2024 – Aug 7, 2024
Undetected for: 88 daysoccurrence → discovery
Materiality determined: —
Notification sent: Nov 26, 2024
Affected individuals: Not disclosed
Data types: Identity (basic)Government IDFinancial account
Data elements: Social Security number
Attack vector: Unauthorized Access
MITRE ATT&CK: T1078 Valid Accounts
Threat actor: External
Initial access: valid_credentials

During the incident: Engaged a third-party cybersecurity firm to assist with the investigation
Promptly terminated the unauthorized access
Took proactive measures designed to limit future unauthorized access
Changes made: Offering 24 months of credit and CyberScan monitoring through IDX
Providing a $1,000,000 insurance reimbursement policy
Providing fully managed identity theft recovery services
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 20 weeks(140 days from discovery to filing)
Compliance flags: CA 60-day late · 109d
Discovery-date grounding: letter-groundedThe discovery date is the detection date narrated in the notification letter — the defensible tier.
Clock breakdown: Statute Window Elapsed Threshold Status
California
Discovered: Aug 9, 2024
→ Notified: Nov 26, 2024
109d 60 days (analyst band, pre-2026 discoveries) CA 60-day late

Statute	Window	Elapsed	Threshold	Status
California	Discovered: Aug 9, 2024 → Notified: Nov 26, 2024	109d	60 days (analyst band, pre-2026 discoveries)	CA 60-day late

Status: No extraction artifact recorded for this disclosure.

Filing propagation · 5 filings · 5 states

View merged incident ↗

Montana State AGOct 3 · first

Washington State AG+77d

Maine State AG+77d

Massachusetts State AG+85d

California State AG+85d · this page

Pattern: first filing Oct 3 (MT), last Dec 27 (CA) — a 85-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/sb24-596699
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Dec 27, 2024
Raw hash: 1b79631bd2cacc38ece54d6b07a661cc171528ec115b3e0cb4c991d848c9d6bc

Linked disclosures

Regulatory filings (4) · sorted by filing gap

Reporting entityHRB Tax Group, Inc.

Victim entityH&R Block

Incidentdiscovered Aug 9, 2024

Stated responseEngaged a third-party cybersecurity firm to assist with the investigation

ComplianceCA 60-day late

Extraction provenanceno artifact recorded

Source provenanceoag.ca.gov