LEONARDO DiCaprio, Nicole Kidman and Robert Redford have become the latest celebrity victims of an Internet hacker who calls himself Guccifer.

The prankster has gained access to DiCaprio and Kidman's email addresses, as well as Redford and Warren Beatty's phone numbers, according to TheSmokingGun.com.

A script for the season four finale of Downton Abbey was also hacked and Steve Martin and Mariel Hemingway have had their information infiltrated by Guccifer.

In 2013, an unfinished draft of Sex and the City author Candace Bushnell's new novel was leaked online by Guccifer.