Health insurer CareFirst BlueCross BlueShield says hackers gained access to a database that included the names of 1.1 million people.
President Barack Obama has ordered sanctions on North Korea in retaliation for the cyberattack on Sony Pictures Entertainment.
According to a recent study, 52 percent of business are defenseless against a cyber-attack.
The former vice chairman of the Joint Chiefs of Staff is under investigation for allegedly leaking classified information about a covert cyber attack on Iran’s nuclear facilities, according to media reports.
Leaders from across the District of Columbia municipal government gathered last April for a summit on cybersecurity, where they agreed in writing on the need to improve computer safety training for its workers.