MMG Fusion Data Breach

What happened

In December 2020, the dental practice management service MMG Fusion was the victim of a data breach which exposed 2.6M unique email addresses. The data also included patient appointments, names, phone numbers, dates of birth, genders and physical addresses. A small number of records also included passwords stored as bcrypt hashes.

Exposed data

Recommended actions

• Change your MMG Fusion password immediately, and update it anywhere you reused the same password.
• Enable two-factor authentication on the affected account and on your critical services (email, banking).
• Watch for targeted phishing emails referencing MMG Fusion — attackers weaponise breach data quickly.
• Stay alert for smishing (SMS phishing) and SIM-swap attempts using your phone number.
• Exposed identity data raises identity-theft risk — consider credit monitoring or a credit freeze.