Last summer, Adam Yuzuk discovered that a data information broker in New York had created an online Cingular Wireless cellular telephone account in his name and had accessed all of his cell phone records.

The broker, Gambino Information Services Inc. of Great Neck, N.Y., then sold those confidential phone records for $300 to Yuzuk’s former business partners — from whom Yuzak had split bitterly amid allegations of thievery and fraud, according to court pleadings filed in federal courts in Atlanta and New York.