Hospital officials now say that more than 100,000 Connecticut residents had their personal information exposed in a cyberattack back in August that hit Prospect Medical Holdings, the parent company of Eastern Connecticut Health Network. Attorneys for Prospect now say the health care company mailed 109,728 notification letters to Connecticut residents to inform them that their information had been breached. That’s five times as many affected patients than the company reported just two months ago. The cyberattack has also thrown a wrench into an agreement by Yale New Haven Health to purchase Prospect’s hospitals in Connecticut.