Mac security vendor Intego has found a hacker tool based on the holes in jailbroken iPhones.

The threat, which Intego calls iPhone/Privacy.A, runs on Mac, Windows, and Linux, can copy any user data from iPhones it finds: "e-mail, contacts, SMSs, calendars, photos, music files, videos, as well as any data recorded by any iPhone app."

Unlike the ikee worm, this attack is silent. The tool scans the network, such as your home network, the Wi-Fi at the library, or your school, and attacks any vulnerable iPhones it finds.

Intego says that 6-8 percent of iPhones are jailbroken. Non-jailbroken iPhones are not vulnerable.

To protect themselves, users of jailbroken iPhones need to change the root and mobile passwords following these instructions.