Sienna Miller Sienna Miller

Sienna Miller is speaking out about her personal life being hacked.

"It's had a huge impact on relationships, friendships, career ... that feeling of violation, it was bad for me," she said on the Today show Thursday.

News of the World, owned by Rupert Murdoch, was recently discovered engaging in illegal phone-tapping of celebrities, politicians, and relatives of victims in the London bombings. In July, Murdoch and his son testified that he did not know about the paper's illegal eavesdropping; they closed the paper as a result of the scandal.

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"At the time I was incredibly paranoid and stories were coming out that nobody knew about, no one other than my mother, my sister, my boyfriend, and my best friend. There were times when I'd sit down with those four people and accuse one of them of selling stories," she said.

Miller sued the tabloid and in May, she was awarded 100,000 pounds ($161,000) for damages. Although she feared tangling with Murdoch's media conglomerate — which includes the Fox network, FX and Fox News Channel as well as 20th Century Fox — and that it could lead to career-damaging reprisals, she says she knew she had to do it.

"It was really scary and there were times when I doubted whether or not it was something I should do," she said. "It was just too horrendous to not expose."

Watch the interview:

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