In February 2015, the company disclosed it was hacked by unknown attackers who accessed 80 million records from people using their health plans. The attack began in February 2014 with a phishing attack when a user in a subsidiary opened a phishing email containing malicious content.
Even the company's CEO was affected by the breach, which exposed birthdays, addresses, Social Security numbers and email addresses. The company said there was "no evidence" that credit card or medical information was exposed.
The subsequent investigations determined that a nation-state was behind the attack but they did not name the nation involved.
In June 2017, the company agreed to settle litigation over the incident for $115 million. The deal provided two years of credit monitoring and identity protection services to customers whose personal data was compromised.
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