Scarlett Johansson I'm Putting My Foot Down Over Nude Pics

9/29/2011 6:00 AM PDT BY TMZ STAFF

Scarlett Johansson is speaking out about the double-edged sword of fame -- claiming she's just as entitled to privacy as anyone else ... after nude pics of the actress leaked online earlier this month.

In a CNN interview ... Scarlett says,  "Who doesn't want to protect their own privacy? There are certain instances where you give a lot of yourself and finally you have to kind of put your foot down and say, 'Oh wait, I'm taking it back.' "

Scarlett -- who asked the FBI to track down the alleged hackers -- adds, "If [one's privacy] is sieged in someway, it feels unjust. It feels wrong."