HackingFinancial ServicesFinanceStolen CredentialsCustomer Data InvolvedTargetedPIIIdentity (basic)LowResolved

Grant Street Asset Management, Inc.

bd_232d9be920aabe81 · schema v1 · pii pii-v1

Severity

Low

Discovered

Jun 22, 2021

Filed

Apr 4, 2022

To disclose

41 weeks

Affected

5state residents only

Linked

4 filings

Confidence

65%

Full breach record for Grant Street Asset Management, Inc. →2 incidents on file

Grant Street Asset Management, Inc. notified New Hampshire AG of a data breach affecting 5 state residents. Unauthorized access to employee emails occurred March 11–June 22, 2021. PII was potentially exposed via observational access to ~610,000 emails. No evidence of data copying or misuse. Systems migrated to secure cloud.

J jump to incidentP pin to compareR raw source

Incident timeline

undetected · 103 days

discovery → filing · 41 weeks / 286 days

Mar 11, 2021

Begins

Jun 22, 2021

Discovered

Apr 4, 2022

Filed

vs. sector median

+33 wks slower

This filing is one of 4 about the same incident.View merged incident

Linked disclosures

Why this link?

Regulatory filings (3) · sorted by filing gap

New Hampshire State AGbd_8e65cef5a57e06f42022-03-30 · +5dVerified
Montana State AGbd_e78ffdff3bd8a6c22022-03-30 · +5dCandidate
Indiana State AGbd_dbe2e6a9ca56b3252022-03-25 · +10dVerified

Name: Metz Lewis Brodmann Must O'Keefe LLC
norm: metz lewis brodmann must o'keefe

Name: Grant Street Asset Management, Inc.
norm: grant street asset management
Industry: Financial Servicesllm

Discovered: Jun 22, 2021
Breach occurred: Mar 11, 2021 – Jun 22, 2021
Undetected for: 103 daysoccurrence → discovery
Materiality determined: —
Notification sent: Mar 25, 2022
Affected individuals: 5state-resident count only
Data types: PIIIdentity (basic)
Attack vector: Unauthorized Access
MITRE ATT&CK: T1078 Valid AccountsT1114 Email Collection
Threat actor: External
Regulator citations: Notified New Hampshire Attorney General Consumer Protection Bureau
Initial access: valid_credentials

During the incident: Immediately shut down access to the affected email server
Retained data forensic and IT consultants to identify the cause and scope of breach
Migrated all GSAM computer systems, including the email server, to a secure Microsoft Cloud server
Changes made: Migrated all GSAM computer systems, including the email server, to a secure Microsoft Cloud server
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 41 weeks(286 days from discovery to filing)
Compliance flags: — (clock not assessable for this source)

Status: No extraction artifact recorded for this disclosure.

Filing propagation · 4 filings · 3 states

View merged incident ↗

Indiana State AGMar 25 · first

New Hampshire State AG+5d

Montana State AG+5d

New Hampshire State AG+10d · this page

Pattern: first filing Mar 25 (IN), last Apr 4 (NH) — a 10-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://mm.nh.gov/files/uploads/doj/remote-docs/grant-street-asset-management-20220404.pdf
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Apr 4, 2022
Raw hash: e29cbf79f46a76e67b7fd84fe4c339f1750fd25ce95350ddb75bb3ca622f1131

Linked disclosures

Regulatory filings (3) · sorted by filing gap

Reporting entityMetz Lewis Brodmann Must O'Keefe LLC

Victim entityGrant Street Asset Management, Inc.

Incidentdiscovered Jun 22, 2021

Stated responseImmediately shut down access to the affected email server

Complianceclock not assessable

Extraction provenanceno artifact recorded

Source provenancemm.nh.gov