Hunter Biden and Garrett Ziegler
Hunter Biden (left) is suing former Trump aide Garrett Ziegler (right).
  • A federal lawsuit filed by Hunter Biden accuses former Trump aide Garrett Ziegler of hacking his data.
  • Ziegler denied the allegations and told Insider that he came by the data legally from Biden's laptop.
  • The case opens a second front in the war between the Bidens and the GOP. It could also impact First Amendment protections for opposition research. 

Lawyers representing Hunter Biden have filed a civil lawsuit in federal court against Garrett Ziegler, a former aide in the Trump White House who has since become a key figure in collecting and publicizing data alleged to have been obtained from one of Biden's abandoned laptops.