MMG Fusion Data Breach
Status: Confirmed
Breach Intelligence Summary
Entity: MMG Fusion · Actor: Unknown · Source: DataBreach.com / ObscureIQ intelligence
Attack: Data Exfiltration via Under investigation
Timeline: Breach (Dec, 2020) · Reported (Aug, 2021) · Leak (3/17/25)
Exposure: 15.5M+ records · Appointments, Dates of birth, Email, Genders, Home Address, Marital statuses, Name, Names, Passwords, Phone Number, Phone numbers, Physical addresses
Status: Confirmed · Risk: High (Account takeover + Phishing / SIM swap)
Summary
In December 2020 MMG Fusion a company offering marketing tools for dental practices experienced a data breach affecting approximately 15 million user accounts. The compromised data included names phone numbers email addresses dates of birth genders marital statuses physical addresses appointments and in some cases passwords stored as bcrypt hashes. MMG Fusion acknowledged the cyberattack stating that while demographic data was breached no financial information was compromised, as the company does not store such data. ​
About MMG Fusion
MMG Fusion is the organization affected by this breach. User data may have been generated through account creation, service usage, or business operations.
If you have interacted with MMG Fusion in any capacity, your data may be included in this breach.
Threat Actor: Unknown
The threat actor responsible for this breach has not been publicly identified or confirmed at this time.
- Under investigation
Breach Exploitation Status
High
Status
Detected
Detected
Detected
Unknown
Unknown
5+ years (high persistence)
Dates of birth are permanent and addresses change slowly. Combined with other fields, this data sustains long-tail targeting risk.
Data Points Exposed
Dark Web Verification
Status: Confirmed
- Dataset containing approximately 15.5M+ records has been identified in breach intelligence sources.
- The data is indexed and searchable across breach notification platforms.
Impact
This breach carries high risk due to the nature of exposed data fields and the scale of affected records.
- Targeted phishing referencing MMG Fusion accounts or services
- Credential stuffing against accounts sharing the same password
- SIM-swap attempts where phone numbers are present
- Physical mail scams and address-based identity verification fraud
- Age/DOB used to bypass identity verification questions
- Data broker enrichment and resale
Recommendations for Impacted Individuals
If you believe your information may be included:
Non-clients may request a breach impact review.
MMG Fusion account updates
Password reset requests
Verify directly through official channels.
Email compromise is often the first pivot point.
Frequently Asked Questions
In Dec, 2020, MMG Fusion experienced a data breach that resulted in the exposure of approximately 15.5M+ records containing personal information.
The exposed data includes Appointments, Dates of birth, Email, Genders, Home Address, Marital statuses, Name, Names, Passwords, Phone Number, Phone numbers, Physical addresses.
Approximately 15.5M+ records were affected based on current breach intelligence.
Yes. This breach is treated as confirmed based on data observed in breach intelligence platforms.
Data circulation has been detected across breach-sharing channels. Downstream exploitation risk exists based on the nature of the exposed fields.
Rotate passwords associated with MMG Fusion, enable multi-factor authentication on email and financial accounts, and monitor for suspicious activity.
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Corporate Accountability
Organizations that collect personal data have a duty to implement reasonable safeguards and to notify affected individuals when breaches occur.
Scope assessments may evolve as investigations continue. Users should not rely solely on early estimates when making risk decisions.
ObscureIQ Advisory
We combine proprietary dark web access with commercial and restricted breach intelligence to verify exposure and assess real-world risk.
- A public-facing individual
- A high-profile executive
- A customer of MMG Fusion
- Or simply concerned about credential reuse
We can confirm whether your information is circulating and evaluate downstream threat vectors.