May 7 (Reuters) - Credit-monitoring firm Equifax Inc said on Monday it has sent a letter to several U.S. Congressional committees providing additional details on data that was breached in a cybersecurity incident in September.

Equifax said that about 38,000 driver's licenses and 3,200 passports details had been uploaded to the portal that had was hacked. (http://bit.ly/2jF3VTh)

Equifax said in September that hackers had stolen personally identifiable information of U.S., British and Canadian consumers.

The company confirmed that information on about 146.6 million names, 146.6 million dates of birth, 145.5 million social security numbers, 99 million address information and 209,000 payment card number and expiration date, were stolen in the cyber security incident. (Reporting by Diptendu Lahiri and Vibhuti Sharma in Bengaluru; Editing by Sandra Maler)