MC2 Data Breach
MC2 Data Aggregator Exposure (2024): 2.1 Million Consumer Records Including Passwords Left in Open Database
data-related service or database with no clearly documented consumer domain
Risk Interpretation
A dataset like this can support identity resolution, targeted phishing, account recovery abuse, and fraud by giving actors cleaned, linkable records that are easier to weaponize than raw fragments. Its value comes from scale and structure, especially when records can be cross-matched to other datasets.
Impact & Downstream Threats
- Credential stuffing against reused passwords across other platforms
- Targeted phishing campaigns using exposed email addresses
Threat Vectors
Breach Intelligence
Executive Summary
About MC2
Why They Hold Your Data
Data services and database operators typically ingest large volumes of structured records such as names, email addresses, phone numbers, account identifiers, business records, and linked metadata so they can host, query, enrich, or redistribute datasets. Their workflows often involve record matching, data normalization, client delivery, and ongoing database maintenance across multiple data sources.
Data Points Exposed
Canonical Fields
email_address, full_name, password
Dark Web Verification
- Dataset containing ~2.1M records identified in breach intelligence sources
- Data indexed and searchable across breach notification platforms
- Source: MC2 Data Breach
Recommended Actions
⚠️ Do not assume this is low sensitivity.
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- A public-facing individual
- A high-profile executive
- A customer of MC2
- Or concerned about credential reuse
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