Over the weekend, Paris Hilton's T-Mobile Sidekick account was hacked into, exposing phone numbers and email address from her celebrity packed phonebook, calendar of events, and personal and even nude photos.

T-Mobile issued a statement this afternoon stating, "T-Mobile's computer forensics and security team is actively investigating to determine how Ms. Hilton's information was obtained."

"This includes the possibility that someone had access to one of Ms. Hilton's devices and / or knew her account password."

"Given the sensitivity of the situation, and to protect our customers' information, we are not able to provide specific details of the investigation at this point."

By this afternoon many of the numbers in Paris' phonebook were changed including those of Eminem, Usher, Anna Kournikova, and Christina Aguilera.