"It's unacceptable and I don't want it to detract from this event," the American world number one told a news conference on Wednesday in the build-up to this week's Ryder Cup at the K Club in County Kildare.
"It's hard to be diplomatic about this. I thought it was the right thing to do to speak about it because I don't want this to detract from this event.
"I am very disappointed about this. Yes, my wife has been a model but to link her with a pornographic website is unacceptable.
"Sometimes they don't let the facts get in the way of a good story. This is a clear indication of that.
"My wife is an extension of me. We do things together and I care about her with all my heart."
Asked if the incident would affect his play at the K Club at the 36th Ryder Cup, Woods replied: "I have a team mate with me and we'll just go out and play."
The three-day Ryder Cup starts on Friday.
