Webthe attack could reduce earnings by as much as $1. 6 billion. Found files containing private information on a vast number of americans. Webfollowing the breach, unitedhealth reportedly paid a $22 million ransom in cryptocurrency to the hackers. Blackcat claimed to have seized six terabytes of highly. Webthe hackers behind a february breach of unitedhealth group subsidiary change healthcare appear to have stolen a huge trove of sensitive information. Weblast week, unitedhealth said it was investigating claims that a cybercrime group has leaked data online that was stolen in the change healthcare attack as part of. Webunitedhealth group has started sending letters to patients, saying information ranging from their health conditions to social security numbers may have. Webthere are several things to do right away if you're a victim of a data breach, many of which change healthcare also recommends. That includes monitoring your. Webunitedhealth group issued a public notice about the february ransomware hack on its change healthcare unit on thursday as part of its requirements to notify the. Webletters about a change healthcare data breach are real. The company is sending out notices by mail as it investigates who is affected and to what extent by a cybersecurity attack it faced in.