Citigroup Breached by Hackers

Citigroup is the latest big company to fall victim to hackers: The bank says information from 200,000 cardholders, including account numbers, contact info, and email addresses, was exposed in a cyberattack. The bank said it did not know how the attack occurred and is contacting people whose accounts were compromised; the breach affects about 1 percent of the bank’s North American customers.