Lincare Holdings Inc. reported a security incident in California where unauthorized access to its network occurred between September 10 and September 29, 2021. The breach potentially exposed patient personal information, including names, addresses, and government identifiers. Lincare engaged outside cybersecurity experts, notified law enforcement, reset passwords, and offered one year of complimentary credit monitoring via Kroll. The incident status is contained, and the investigation into the full scope of affected individuals remains ongoing.