ABC News is reporting that Sarah Palin's website and credit card information apparently have been hacked by supporters of WikiLeaks founder Julian Assange.

Palin told ABC's Jake Tapper in an e-mail that "this is what happens when you exercise the First Amendment and speak against his sick, un-American espionage efforts."

The former Alaska governor has criticized Assange on her Facebook page for posting classified documents on WikiLeaks that reveal the identity of Afghan sources to the Taliban. She called Assange an "anti-American operative with blood on his hands."

The website for Sarah PAC was protected and not harmed by the cyberattack, Palin aide Rebecca Mansour said.

The website for MasterCard was shut down earlier today, apparently by WikiLeaks supporters. Our colleague John Bacon has a report in the On Deadline blog.

Assange voluntarily turned himself in on Tuesday to British authorities, after an arrest warrant was issued for him in Sweden on charges of rape, sexual molestation and unlawful coercion. He says he is innocent.

(Posted by Catalina Camia)