MalwareFinancial ServicesFinanceRansomwareData ExfiltratedData EncryptedCustomer Data InvolvedDelayed DiscoveryIdentity (basic)Government IDFinancial accountHighActive

Guaranty Fund Mutual Services

bd_f83bad43243f20ba · schema v1 · pii pii-v1

Severity

High

Discovered

Aug 24, 2020

Filed

Mar 15, 2021

To disclose

29 weeks

Affected

12,874state residents only

Confidence

66%

Supplemental notice from Devine Millimet, & Branch on behalf of Guaranty Fund Mutual Services regarding a ransomware incident affecting NH residents. Attack began Aug 13, 2020; discovered Aug 24, 2020. Data potentially exfiltrated included names, SSNs, DOBs, and account numbers for 12,874 NH residents. FBI notified. Credit monitoring offered.

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Incident timeline

undetected · 11 days

discovery → filing · 29 weeks / 203 days

Aug 13, 2020

Begins

Aug 24, 2020

Discovered

Mar 15, 2021

Filed

vs. sector median

+21 wks slower

Tracked as a single-filing incident — the only disclosure on record for this event so far.Confirmed12,874 affectedView incident

Name: Devine, Millimet & Branch, P.A
norm: devine millimet branch

Name: Guaranty Fund Mutual Services
norm: guaranty fund mutual services
Domain: gtfundmanagers.com
Industry: Financial Servicesllm

Discovered: Aug 24, 2020
Breach occurred: Aug 13, 2020
Undetected for: 11 daysoccurrence → discovery
Materiality determined: —
Notification sent: Mar 8, 2021
Affected individuals: 12,874state-resident count only
Data types: Identity (basic)Government IDFinancial account
Attack vector: Ransomware
MITRE ATT&CK: T1486 Data Encrypted for ImpactT1041 Exfiltration Over C2 Channel
Threat actor: ExternalFinancial
Regulator citations: Reported the attack to the Federal Bureau of Investigation Cyber Crimes Unit
Initial access: exploit_public_facing

During the incident: Retained a third party forensic consultant to investigate the attack
Reported the attack to the Federal Bureau of Investigation Cyber Crimes Unit
Installed additional security software to enhance threat protection
Took steps to prevent the distribution of any data that may have been removed
Offered complimentary access to twenty-four (24) months of credit monitoring and identity theft restoration services through TransUnion
Changes made: Installed additional security software to enhance threat protection
Took steps to prevent the distribution of any data that may have been removed
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 29 weeks(203 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/devine-millimet-branch-20210315.pdf
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Mar 15, 2021
Raw hash: 7c7a41fe996a21820e016f0638e24922ce4bd47a5783d5dc6b96b812e442d2a3

Reporting entityDevine, Millimet & Branch, P.A

Victim entityGuaranty Fund Mutual Services

Incidentdiscovered Aug 24, 2020

Stated responseRetained a third party forensic consultant to investigate the attack

Complianceclock not assessable

Extraction provenanceno artifact recorded

Source provenancemm.nh.gov