The 10 Biggest Data Breaches Of 2015 (So Far)
CareFirst BlueCross BlueShield
While not the biggest breach of the year by number of records compromised, the CareFirst BlueCross BlueShield breach in May was notable because it highlighted the continued vulnerability of the health-care industry. CareFirst discovered the breach as part of a Mandiant-led security review that found hackers had gained access to a database that members use to get access to the company's website and services. All in all, 1.1 million members had their names, birth dates, email addresses and subscriber information compromised, but member password encryption prevented cybercriminals from gaining access to Social Security numbers, medical claims, employment, credit card and financial data.