Kate filed a federal lawsuit Monday against ex-husband Jon and the writer of a tell-all book, alleging that around the time of their 2009 separation her former hubby hacked into her password-protected email, bank and phone accounts and also stole from her house a hard drive containing personal information.
In the suit, she said he then funneled the private info to Robert Hoffman, a tabloid journalist and pal of Jon's, who used it to pen "Kate Gosselin: How She Fooled the World."
The book was pulled by major retailers such as Amazon a mere two days after it was released because the information in it was obtained illegally, the suit said.
While demanding a jury trial, Kate is suing for four different categories of damages, attorney's fees and more.
Hoffman, in an email interview with Radar Online late last year, said he had more information on hand, in addition to what was published in the book, and threatened to use it.
"The other 90% of the material that I possess will not be published, ever, but you can be sure that if I’m falsely accused of anything and drug into court, or called a liar by Kate Gosselin or her lawyers, this information will come out then, including photographs," Hoffman wrote, according to the site.
PHOTOS AND MORE: