The Oklahoma Insurance Department is warning that the personal information of hundreds of Oklahomans may have been compromised during an online security breach at the Nationwide Insurance Company.
The computer network, used by Nationwide and Allied Insurance, was attacked on October 3.
The OID has been notified that 534 Oklahomans may have been affected.
"Protecting the privacy and security of consumers is a top priority," said Oklahoma Insurance Commissioner John D. Doak.
The FBI is investigating the attack, which may have compromised customers' Social Security numbers, driver's license numbers, and other pieces of personal information.
Nationwide officials have begun sending out notifications to customers who may have been affected.
Nationwide has opened a toll-free hotline to answer questions from customers about the attack. The number is 1-800-760-1125. Questions can also be directed toward the OID Consumer Assistance hotline at 1-800-522-0071.