HackingProfessional ServicesProfessional ServicesStolen CredentialsCustomer Data InvolvedPIILowContained

Erickson & Sederstrom, P.C., L.L.O.

bd_8013e9a0706ba1b8 · schema v1 · pii pii-v1

Severity

Low

Discovered

Mar 5, 2024

Filed

Jul 11, 2024

To disclose

18 weeks

Affected

1state residents only

Linked

2 filings

Confidence

65%

Full breach record for Erickson & Sederstrom, P.C., L.L.O. →

Erickson & Sederstrom, P.C., L.L.O. notified the NH AG of a data breach where unauthorized network access occurred Dec 7-8, 2023. The firm discovered the incident on March 5, 2024. One NH resident's PII was affected. Notices were mailed July 8, 2024, offering credit monitoring.

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Incident timeline

undetected · 89 days

discovery → filing · 18 weeks / 128 days

Dec 7, 2023

Begins

Mar 5, 2024

Discovered

Jun 17, 2024

Scope determined

Jul 11, 2024

Filed

vs. sector median

on median

This filing is one of 2 about the same incident.View merged incident

Linked disclosures

Why this link?

Regulatory filings (1) · sorted by filing gap

Indiana State AGbd_2eb1a1d01731856b2024-07-08 · +3dCandidate

Name: Erickson & Sederstrom, P.C., L.L.O.
norm: erickson sederstrom pc llo

Name: Erickson & Sederstrom, P.C., L.L.O.
norm: erickson sederstrom pc llo
Industry: Professional Servicesllm

Discovered: Mar 5, 2024
Breach occurred: Dec 7, 2023 – Dec 8, 2023
Undetected for: 89 daysoccurrence → discovery
Materiality determined: Jun 17, 2024
Notification sent: Jul 8, 2024
Affected individuals: 1state-resident count only
Data types: PII
Attack vector: Unauthorized Access
MITRE ATT&CK: T1078 Valid Accounts
Threat actor: External
Regulator citations: Notified New Hampshire Office of the Attorney General Consumer Protection Bureau
Initial access: valid_credentials

During the incident: Conducted an investigation
Changed network passwords
Notified law enforcement
Reviewed its policies and procedures related to data protection
Offering all individuals complimentary credit monitoring and identity protection services
Changes made: Changed network passwords
Reviewed its policies and procedures related to data protection
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 18 weeks(128 days from discovery to filing)
Compliance flags: — (clock not assessable for this source)

Status: No extraction artifact recorded for this disclosure.

Filing propagation · 2 filings · 2 states

View merged incident ↗

Indiana State AGJul 8 · first

New Hampshire State AG+3d · this page

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/erickson-sederstrom-20240711.pdf
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Jul 11, 2024
Raw hash: 4eaeb071ec07d1c95bcf72729c851394fc88d342be64ed22d61e10a878e2e06c

Linked disclosures

Regulatory filings (1) · sorted by filing gap

Reporting entityErickson & Sederstrom, P.C., L.L.O.

Victim entityErickson & Sederstrom, P.C., L.L.O.

Incidentdiscovered Mar 5, 2024

Stated responseConducted an investigation

Complianceclock not assessable

Extraction provenanceno artifact recorded

Source provenancemm.nh.gov