HackingTechnologyInformationCustomer Data InvolvedDelayed DiscoveryIdentity (basic)Government IDFinancial accountFinancial credentialsPHIHealth (basic)CredentialsMediumContained

Multi-Fineline Electronix, Inc

bd_f7f55943ecb7a48e · schema v1 · pii pii-v1

Severity

Medium

Discovered

Jan 31, 2024

Filed

Feb 8, 2024

To disclose

8 days

Affected

Not disclosed

Linked

4 filings

Confidence

66%

Full breach record for Multi-Fineline Electronix, Inc →

Multi-Fineline Electronix, Inc. (MFLEX) notified California residents of a data breach discovered on January 31, 2024. The unauthorized network compromise occurred between December 1, 2022, and January 2, 2023. Exposed data included names, SSNs, driver's license numbers, financial account details, and health information. MFLEX engaged Kroll for identity monitoring and implemented new security measures.

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Incident timeline

undetected · 426 days

discovery → filing · 8 days

Dec 1, 2022

Begins

Jan 31, 2024

Discovered

Feb 8, 2024

Filed

vs. sector median

18 wks faster

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

Indiana State AGbd_3be670fda9f0aa292024-02-08Verified
Massachusetts State AGbd_aeda87d3de028cab2024-02-08Verified
Montana State AGbd_e294df401d6abd9c2024-02-08Candidate

Name: Multi-Fineline Electronix, Inc
norm: multi fineline electronix
Domain: www.mflex.com

Name: Multi-Fineline Electronix, Inc
norm: multi fineline electronix
Domain: www.mflex.com
Industry: Technologyllm

Discovered: Jan 31, 2024
Breach occurred: Dec 1, 2022 – Jan 2, 2023
Undetected for: 426 daysoccurrence → discovery
Materiality determined: —
Notification sent: —
Affected individuals: Not disclosed
Data types: Identity (basic)Government IDFinancial accountFinancial credentialsPHIHealth (basic)Credentials
Data elements: Social Security numberDate of birthMedical information
Attack vector: Unauthorized Access
MITRE ATT&CK: T1078 Valid Accounts
Threat actor: External

During the incident: Implemented new security measures to further enhance security of our network
Secured the services of Kroll to provide identity monitoring at no cost to you for one year
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 8 days(8 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 · 4 states

View merged incident ↗

Indiana State AGFeb 8 · first

Massachusetts State AGFeb 8 · first

Montana State AGFeb 8 · first

California State AGFeb 8 · 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://oag.ca.gov/ecrime/databreach/reports/sb24-580693
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Feb 8, 2024
Raw hash: 74bfd889ced317c6acff82ed4633e85db1601c1acda8c11a331a7bec917eeae4

Linked disclosures

Regulatory filings (3) · sorted by filing gap

Reporting entityMulti-Fineline Electronix, Inc

Victim entityMulti-Fineline Electronix, Inc

Incidentdiscovered Jan 31, 2024

Stated responseImplemented new security measures to further enhance security of our network

Complianceclock not assessable

Extraction provenanceno artifact recorded

Source provenanceoag.ca.gov