HackingFinancial ServicesFinanceVulnerability ExploitData ExfiltratedCustomer Data InvolvedSupply Chain (3P Vendor)Identity (basic)Government IDHighContained

Flagstar Bank, National Association

bd_5af88cb2aa8755e1 · schema v1 · pii pii-v1

Severity

High

Discovered

Aug 8, 2023

Filed

Dec 27, 2023

To disclose

20 weeks

Affected · nationwide

25,89122 in this filing

Linked

15 filings

Confidence

66%

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

Flagstar Bank, N.A. reported a cybersecurity incident involving its third-party vendor, FIS, utilizing MOVEit transfer software. The breach occurred between May 27 and May 31, 2023, and was discovered on August 8, 2023. Approximately 25,891 individuals were affected, including 22 Maine residents. The incident involved the unauthorized acquisition of personal information, including names and government identifiers. Flagstar notified affected individuals in writing starting November 6, 2023, and offered two years of credit monitoring and identity theft protection services through Kroll.

J jump to incidentP pin to compareR raw source

Maine clockDiscovered Aug 8, 2023 → Filed with AG Dec 27, 2023141d ✗ ME AG >90d20 weeks discovery → filing

⚠ AG web formThe discovery date came from the AG web-form field, which is systematically later than the detection date stated in the letter. Treat the clock as indicative.

Incident timeline

undetected · 73 days

discovery → filing · 20 weeks / 141 days

May 27, 2023

Begins

Aug 8, 2023

Discovered

Dec 27, 2023

Filed

vs. sector median

+12 wks slower

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_f45e64db77a72ae52023-12-27Verified
California State AGbd_93d56742578abcb32023-12-15 · +12dVerified
New Hampshire State AGbd_ba1cee24773c76652023-11-06 · +51dVerified
Maine State AGbd_267688291d7bda9f2023-11-05 · +52dVerified

Show 6 more filings ↓up to 83d gap

Massachusetts State AGbd_a8b93efc400ce2172023-11-05 · +52dVerified
Indiana State AGbd_25963c4420d351012023-10-06 · +82dVerified
Oregon State AGbd_bebe196ceda9728b2023-10-06 · +82dVerified
Massachusetts State AGbd_25176ff42413efea2023-10-05 · +83dVerified
Maine State AGbd_2d517ec1c38f95f82023-10-05 · +83dCandidate
Vermont State AGbd_48a0d2a33519786f2023-10-05 · +83dVerified

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: Aug 8, 2023
Breach occurred: May 27, 2023 – May 31, 2023
Undetected for: 73 daysoccurrence → discovery
Materiality determined: —
Notification sent: Nov 6, 2023
Affected individuals: 25,891state + nationwide
Data types: Identity (basic)Government ID
Attack vector: Unauthorized Access
MITRE ATT&CK: T1190 Exploit Public-Facing Application
Threat actor: ExternalFinancial
Regulator citations: Filed data breach notice with Maine Attorney General's Office
Initial access: exploit_public_facing

During the incident: Sent written notification to affected consumers
Sent supplemental consumer notifications as needed
Offered two years of credit monitoring, fraud consultation, and identity theft restoration through Kroll
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 20 weeks(141 days from discovery to filing)
Compliance flags: ME AG >90d · 141dME resident >60d · 90d
Discovery-date grounding: AG web formThe discovery date came from the AG web-form field, which is systematically later than the detection date stated in the letter. Treat the clock as indicative.
Clock breakdown: Statute Window Elapsed Threshold Status
Maine
Discovered: Aug 8, 2023
→ Filed with AG: Dec 27, 2023
141d 90 days ME AG >90d
Maine
Discovered: Aug 8, 2023
→ Notified: Nov 6, 2023
90d 60 days (analyst band; statutory cap is 30 days) ME resident >60d

Statute	Window	Elapsed	Threshold	Status
Maine	Discovered: Aug 8, 2023 → Filed with AG: Dec 27, 2023	141d	90 days	ME AG >90d
Maine	Discovered: Aug 8, 2023 → Notified: Nov 6, 2023	90d	60 days (analyst band; statutory cap is 30 days)	ME resident >60d

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

Maine State AG+83d

Maine State AG+83d · this page

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://www.maine.gov/agviewer/content/ag/985235c7-cb95-4be2-8792-a1252b4f8318/1597494e-33db-450f-9959-357d0f2eb461.shtml
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Dec 27, 2023
Raw hash: 139f9e3bb8da74f6a4e64f308212adf5da1b01feee8e402cfb91f996a6fb41bb

Linked disclosures

Regulatory filings (10) · sorted by filing gap

Reporting entityFlagstar Bank, National Association

Victim entityFlagstar Bank, National Association

Incidentdiscovered Aug 8, 2023

Stated responseSent written notification to affected consumers

ComplianceME AG >90d

Extraction provenanceno artifact recorded

Source provenancewww.maine.gov