The covered entity (CE), Magellan Rx Management, reported that employees of its business associate (BA) were the victims of an email phishing attack affecting the protected health information (PHI) of 13,663 individuals. The PHI involved included names, dates of birth, addresses, and financial and clinical information. The CE notified HHS, affected individuals, the media, and provided substitute notice. In response to the breach, the CE implemented additional administrative safeguards and terminated its business relationship with the BA.