Tiger Woods and Katharine McPhee have been hacked -- private nude photos have surfaced -- and their lawyers are vowing to destroy anyone who posts them.
The website Celeb Jihad posted graphic selfies of various naked stars, including Tiger, Lindsey Vonn, Miley Cyrus, Kristen Stewart and Stella Maxwell.
We've learned Woods has already unleashed pitbull lawyer, Marty Singer -- who's threatening to sue the website if it doesn't remove the Woods photo STAT.
Sources tell TMZ .