The covered entity (CE), Professional Dental Alliance of Florida, reported that employees of its business associate (BA) were the victims of an email phishing attack that compromised the protected health information (PHI) of approximately 18,626 individuals. The PHI involved included names, dates of birth, Social Security numbers, and claims and other treatment information. The CE notified HHS, affected individuals, the media, and provided substitute notice on its website. A call center was established for questions or concerns. In response to the breach, the BA strengthened its administrative, technical, and security safeguards and retrained it staff on email security.