Law enforcement is working to determine how hackers accessed a computer system and stole credit card information and other data from thousands of AT&T DSL equipment customers.
The company says the system of the online Web store was hacked into over the weekend and the files of fewer than 19-thousand customers were affected.
AT&T says it notified the major credit card companies whose customer accounts were affected. The company says it shut down the online DSL store and would pay for credit monitoring services for the people whose files were accessed.
Officials say the unauthorized access was found within hours of the breach over the weekend.
AT&T spokesman Walt Sharp says no fraudulent charges had been reported so far.