HackingFinancial ServicesFinanceVulnerability ExploitStolen CredentialsSupply Chain (3P Vendor)Data ExfiltratedCustomer Data InvolvedPIIIdentity (basic)Financial accountLowContained

Flagstar Bank, National Association

bd_93d56742578abcb3 · schema v1 · pii pii-v1

Severity

Low

Discovered

—

Filed

Dec 15, 2023

To disclose

—

Affected

Not disclosed

Linked

15 filings

Confidence

66%

Full breach record for Flagstar Bank, National Association →7 incidents on file

Flagstar Bank, N.A. notified California residents of a data breach involving its third-party vendor, Fidelity Information Services (FIS). Unauthorized actors exploited vulnerabilities in MOVEit Transfer software to access customer files between May 27 and May 31, 2023. The incident resulted in the exfiltration of personal information, including names, addresses, and potentially financial account details. Flagstar offered two years of complimentary identity monitoring through Kroll. The vendor patched the vulnerabilities and conducted a technical review.

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Incident timeline

May 27, 2023

Begins

Dec 15, 2023

Filed

This filing is one of 15 about the same incident.View merged incident

Part of FISERV, INC. supply-chain incident (2023) — a supply-chain cascade affecting multiple organizations.View cascade →

Linked disclosures

Why this link?

Regulatory filings (10) · sorted by filing gap

Maine State AGbd_5af88cb2aa8755e12023-12-27 · +12dVerified
Maine State AGbd_f45e64db77a72ae52023-12-27 · +12dVerified
New Hampshire State AGbd_ba1cee24773c76652023-11-06 · +39dVerified
Maine State AGbd_267688291d7bda9f2023-11-05 · +40dVerified

Show 6 more filings ↓up to 71d gap

Massachusetts State AGbd_a8b93efc400ce2172023-11-05 · +40dVerified
Indiana State AGbd_25963c4420d351012023-10-06 · +70dVerified
Oregon State AGbd_bebe196ceda9728b2023-10-06 · +70dVerified
Massachusetts State AGbd_25176ff42413efea2023-10-05 · +71dVerified
Maine State AGbd_2d517ec1c38f95f82023-10-05 · +71dCandidate
Vermont State AGbd_48a0d2a33519786f2023-10-05 · +71dVerified

Showing first 10 of 14 linked disclosures.

Name: Flagstar Bank, National Association
norm: flagstar bank national

Name: Flagstar Bank, National Association
norm: flagstar bank national
Industry: Financial Servicesllm

Discovered: —
Breach occurred: May 27, 2023 – May 31, 2023
Materiality determined: —
Notification sent: —
Affected individuals: Not disclosed
Data types: PIIIdentity (basic)Financial account
Attack vector: Third-Party / Supply Chain
MITRE ATT&CK: T1190 Exploit Public-Facing ApplicationT1195 Supply Chain CompromiseT1041 Exfiltration Over C2 Channel
Threat actor: External
Regulator citations: Notified regulatory bodies as required
Third party: via Fidelity Information Services, LLC
Initial access: supply_chain

During the incident: Launched a comprehensive investigation
Notified regulatory bodies as required
Offered free identity monitoring services through Kroll for two years
Changes made: Remediated all technical vulnerabilities
Patched systems in accordance with the MOVEit software provider’s guidelines
Mobilized a technical response team to examine the relevant MOVEit systems
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.

Filing propagation · 11 filings · 7 states

View merged incident ↗

Massachusetts State AGOct 5 · first

Maine State AGOct 5 · first

Vermont State AGOct 5 · first

Indiana State AG+1d

Oregon State AG+1d

Maine State AG+31d

Massachusetts State AG+31d

New Hampshire State AG+32d

California State AG+71d · this page

Maine State AG+83d

Pattern: first filing Oct 5 (MA), last Dec 27 (ME) — a 83-day rolling notification. Rolling spreads often mean counsel is filing as thresholds trip per state. Why this link?

Cascade drawn from the first 10 linked disclosures of 14 — the full spread may be wider.

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/sb24-578019
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: 8150f70eadacc06aab3ada8584ed988f5b45d4a959189dcafb06a7a9a122dcd8

Linked disclosures

Regulatory filings (10) · sorted by filing gap

Reporting entityFlagstar Bank, National Association

Victim entityFlagstar Bank, National Association

IncidentThird-Party / Supply Chain

Stated responseLaunched a comprehensive investigation

Complianceclock not assessable

Extraction provenanceno artifact recorded

Source provenanceoag.ca.gov