The Women��s Health care radical of Pennsylvania, with 45 offices throughout the state, has notified 300,000 of its patients that��a ransomware attack��has put their personal health information at risk.The health system discovered a server and workstation at ace of its practices was infected by ransomware on May 16. Officials said the infected server and workstation were removed from the network, before officials launched an investigation by a computer forensics team.The investigation revealed the cybercriminals began hacking the system as early as january 2017, by leveraging a security vulnerability. Officials said the surety flaw allowed limited access to patient info before it encrypted certain files.The health system couldn��t watch if patient information acquired or viewed.��The data stolen by hackers included names, social Security numbers, birth dates, pregnancy histories, blood type information, lab results, medical tape numbers, insurance information and medical diagnoses. Officials said the encrypted files were restored from backups and didn��t disrupt patient care.