HackingFinancial ServicesFinanceStolen CredentialsCustomer Data InvolvedIdentity (basic)Government IDFinancial accountMediumContained

ELLINGTON MANAGEMENT GROUP, L.L.C.

bd_c0239d7736dd9870 · schema v1 · pii pii-v1

Severity

Medium

Discovered

Feb 24, 2022

Filed

Aug 29, 2022

To disclose

27 weeks

Affected

18state residents only

Linked

5 filings

Confidence

66%

Full breach record for ELLINGTON MANAGEMENT GROUP, L.L.C. →2 incidents on file

Ellington Management Group, LLC notified the NH AG of unauthorized access to two user email mailboxes on Feb 24, 2022. 18 NH residents affected. Data included names, SSNs, driver's licenses, credit card numbers, and bank account numbers. Ellington engaged a cybersecurity firm and offered 1 year of credit monitoring.

J jump to incidentP pin to compareR raw source

Incident timeline

discovery → filing · 27 weeks / 186 days

Feb 24, 2022

Begins

Feb 24, 2022

Discovered

Aug 29, 2022

Filed

vs. sector median

+18 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

Montana State AGbd_3517ddbfe78c82c82022-08-29Candidate
Indiana State AGbd_ccc66020504c4d712022-08-29Verified
Maine State AGbd_cd44060793b2c14d2022-08-29Verified
Massachusetts State AGbd_1fdbdd982bf09d3f2022-09-01 · +3dVerified

Name: Sidley Austin LLP
norm: sidley austin

Name: ELLINGTON MANAGEMENT GROUP, L.L.C.
norm: ellington management
Industry: Financial Servicesllm

Discovered: Feb 24, 2022
Breach occurred: Feb 24, 2022
Undetected for: 0 daysoccurrence → discovery
Materiality determined: —
Notification sent: Aug 29, 2022
Affected individuals: 18state-resident count only
Data types: Identity (basic)Government IDFinancial account
Data elements: Social Security numberDate of birth
Attack vector: Unauthorized Access
MITRE ATT&CK: T1078 Valid Accounts
Threat actor: External
Regulator citations: Notified New Hampshire Attorney General Consumer Protection Bureau
Initial access: valid_credentials

During the incident: Worked with a leading cybersecurity firm to assess our controls
Confirm that they align with industry standards and close any other potential unauthorized access points
Offering potentially impacted individuals in New Hampshire one year of complimentary credit monitoring services
Changes made: Assessed, identified, and remediated the unauthorized system access
Worked with a leading cybersecurity firm to assess our controls
Confirm that they align with industry standards and close any other potential unauthorized access points
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 27 weeks(186 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 · 5 states

View merged incident ↗

Montana State AGAug 29 · first

Indiana State AGAug 29 · first

Maine State AGAug 29 · first

New Hampshire State AGAug 29 · first · this page

Massachusetts State AG+3d

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://mm.nh.gov/files/uploads/doj/remote-docs/ellington-management-20220829.pdf
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Aug 29, 2022
Raw hash: ae1da3dab4a64b6a4aac040d70077453c2cc5e4c1fbf1a9f90e054f572327867

Linked disclosures

Regulatory filings (4) · sorted by filing gap

Reporting entitySidley Austin LLP

Victim entityELLINGTON MANAGEMENT GROUP, L.L.C.

Incidentdiscovered Feb 24, 2022

Stated responseWorked with a leading cybersecurity firm to assess our controls

Complianceclock not assessable

Extraction provenanceno artifact recorded

Source provenancemm.nh.gov