Home Box Office, Inc. (HBO) disclosed a data breach affecting its information technology network. An unauthorized third party illegally accessed HBO's network between May 15, 2017, and July 26, 2017. The incident involved the exfiltration of personally identifiable information (PII). HBO cooperated with law enforcement, implemented enhanced security controls, and provided 12 months of free credit monitoring and identity theft prevention services via AllClear ID to affected individuals.