HackingFinancial ServicesFinanceVulnerability ExploitZero-DaySupply Chain (3P Vendor)Customer Data InvolvedIdentity (basic)Government IDMediumContained

EFS Advisors LLC

bd_31960f63d3ee1d59 · schema v1 · pii pii-v1

Severity

Medium

Discovered

Feb 22, 2024

Filed

May 23, 2024

To disclose

13 weeks

Affected

14state residents only

Linked

5 filings

Confidence

66%

Full breach record for EFS Advisors LLC →2 incidents on file

EFS Advisors LLC notified Montana residents of a data security incident detected on Feb 22, 2024. An unauthorized third party exploited a zero-day vulnerability in software used by an external IT provider to infiltrate the network. The incident may have exposed names and Social Security numbers. EFS engaged forensic investigators and is offering 12 months of credit monitoring services.

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Incident timeline

discovery → filing · 13 weeks / 91 days

Feb 22, 2024

Discovered

May 23, 2024

Filed

vs. sector median

+5 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

New Hampshire State AGbd_34c7a063a56e09452024-05-23Verified
Massachusetts State AGbd_c57b78779a55a1ec2024-05-23Verified
Maine State AGbd_e97465459911133f2024-05-23Verified
Indiana State AGbd_f72c0652e062f3db2024-05-23Verified

Name: EFS Advisors LLC
norm: efs advisors

Name: EFS Advisors LLC
norm: efs advisors
Industry: Financial Servicesllm

Discovered: Feb 22, 2024
Materiality determined: —
Notification sent: May 20, 2024
Affected individuals: 14state-resident count only
Data types: Identity (basic)Government ID
Data elements: Social Security number
Attack vector: Misconfiguration
MITRE ATT&CK: T1190 Exploit Public-Facing ApplicationT1486 Data Encrypted for Impact
Threat actor: ExternalFinancial
Initial access: exploit_public_facing

During the incident: Moved quickly to secure its network environment
Launched a thorough investigation
Performed investigation with the help of independent IT security and forensic investigators
Providing access to Single Bureau Credit Monitoring/Single Bureau Credit Report/Single Bureau Credit Score services at no charge
Providing proactive fraud assistance
Changes made: Conferring with cybersecurity experts to analyze and enhance its internal security architecture
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 13 weeks(91 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 ↗

New Hampshire State AGMay 23 · first

Massachusetts State AGMay 23 · first

Maine State AGMay 23 · first

Indiana State AGMay 23 · first

Montana State AGMay 23 · first · 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://dojmt.gov/wp-content/uploads/OCP/Consumer-notification-letter-1424.pdf
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: May 23, 2024
Raw hash: a93769253f860b09945ec952d3a6b1b18b5820dca6c59894a934cd84813a1d80

Linked disclosures

Regulatory filings (4) · sorted by filing gap

Reporting entityEFS Advisors LLC

Victim entityEFS Advisors LLC

Incidentdiscovered Feb 22, 2024

Stated responseMoved quickly to secure its network environment

Complianceclock not assessable

Extraction provenanceno artifact recorded

Source provenancedojmt.gov