HackingProfessional ServicesProfessional ServicesStolen CredentialsData ExfiltratedCustomer Data InvolvedDelayed DiscoveryPIIIdentity (basic)LowResolved

Gunster, Yoakley, & Stewart, PA

bd_f5560e5c2ce47228 · schema v1 · pii pii-v1

Severity

Low

Discovered

Nov 27, 2022

Filed

Jul 30, 2024

To disclose

20 months

Affected

671state residents only

Confidence

65%

Full breach record for Gunster, Yoakley, & Stewart, PA →7 incidents on file

Gunster, Yoakley & Stewart, PA filed a supplemental notification to the NH AG regarding a November 2022 unauthorized access to its document management system. Approximately 671 NH residents were notified. The firm engaged forensic investigators, notified law enforcement, and offered credit monitoring.

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Incident timeline

undetected · 7 days

discovery → filing · 20 months / 611 days

Nov 20, 2022

Begins

Nov 27, 2022

Discovered

Jul 30, 2024

Filed

vs. sector median

+69 wks slower

Tracked as a single-filing incident — the only disclosure on record for this event so far.Confirmed671 affectedView incident

Name: BakerHostetler LLP
norm: bakerhostetler
Domain: gunster.com

Name: Gunster, Yoakley, & Stewart, PA
norm: gunster yoakley stewart
Domain: gunster.com
Industry: Professional Servicesllm

Discovered: Nov 27, 2022
Breach occurred: Nov 20, 2022 – Nov 27, 2022
Undetected for: 7 daysoccurrence → discovery
Materiality determined: —
Notification sent: Apr 1, 2023
Affected individuals: 671state-resident count only
Data types: PIIIdentity (basic)
Attack vector: Unauthorized Access
MITRE ATT&CK: T1078 Valid AccountsT1119 Automated Collection
Threat actor: External
Regulator citations: Provided prior notification to the New Hampshire Attorney General on August 4, 2023
Initial access: valid_credentials

During the incident: Took measures to contain the incident and securely restore its network
Conducted a thorough investigation with the assistance of firms
Notified federal law enforcement and has been in communication with them regarding the incident
Began mailing notifications to individuals
Provided substitute notice via nationwide media and a post on Gunster’s website
Offered the residents a complimentary membership to credit monitoring and identity protection services through Kroll
Established a dedicated, toll-free call center to answer questions
Changes made: Implemented additional measures to further strengthen the security of its network
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 20 months(611 days from discovery to filing)
Compliance flags: — (clock not assessable for this source)

Status: No extraction artifact recorded for this disclosure.

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/gunster-yoakley-stewart-20240730.pdf
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Jul 30, 2024
Raw hash: a5cf8e96776fa20f6a72e3780a23ff55426aa4d637b799fa9d20b14848389adf

Reporting entityBakerHostetler LLP

Victim entityGunster, Yoakley, & Stewart, PA

Incidentdiscovered Nov 27, 2022

Stated responseTook measures to contain the incident and securely restore its network

Complianceclock not assessable

Extraction provenanceno artifact recorded

Source provenancemm.nh.gov