The Middlefield Banking Company
bd_d3345e13b9cb6e07 · schema v1 · pii pii-v1
Full breach record for The Middlefield Banking Company →Middlefield Banc Corp. disclosed via Item 8.01 8-K that its subsidiary, The Middlefield Banking Company, suffered an April 2023 cyber-attack that disrupted computer systems. A forensic review determined that nonpublic information of current/former employees, customers and others was obtained, potentially including names, SSNs, driver's license info, dates of birth, financial account information, medical information, passport numbers, payment card info, and usernames/passwords. The Bank is notifying impacted individuals and offering complimentary identity protection services.
Linked disclosures
Why this link?Regulatory filings (4) · sorted by filing gap
- bd_2dee8d0f47f231bcVermont State AGfiled 2023-12-21Verified
- bd_4752d46a27914d1aMontana State AGfiled 2023-12-21Candidate
- bd_719ea19c8e005680New Hampshire State AGfiled 2023-12-21Verified
- bd_cc811a129570fcd5California State AGfiled 2023-12-21Verified
Source provenance
- Source URL
- https://www.sec.gov/Archives/edgar/data/836147/000119312523300259/d441183d8k.htm
DisclosureLens renders the full SEC/HHS filing inline below from the originating regulator’s public record (§4.5 fair report privilege).
- Filed at
- Dec 21, 2023
- Raw hash
- 0373eb19b3a0346fb4d5d6069608acd287a5202465ed65da2f35c3a37480b7da
Source filing
Reporting entity
- Name
- MIDDLEFIELD BANC CORP.norm: middlefield banc
- SEC CIK
- 0000836147
Victim entity
- Name
- The Middlefield Banking Companynorm: the middlefield banking
- Industry
- Financial Servicesllm
Incident
- Discovered
- —
- Materiality determined
- —
- Notification sent
- Dec 21, 2023
- Affected individuals
- Not disclosed
- Data types
- PIIIDENTITY_BASICIDENTITY_GOVERNMENTFINANCIAL_ACCOUNTCREDENTIALSAUTHENTICATIONHEALTH_BASICPHI
- Attack vector
- Unauthorized Access
- Threat actor
- External
- Regulator citations
- Notifying regulatory authorities in accordance with applicable law
Compliance
- Compliance flags
- — (clock not assessable for this source)
Extraction provenance
- Status
- No extraction artifact recorded for this disclosure.