Scarlett Johansson said fighting against “deepfake” porn videos, in which someone’s face is superimposed onto a clip they didn’t actually appear in, has become a “lost cause.”

The “Avengers” star commented in a Sunday Washington Post story about how artificial intelligence software is being used to create increasingly realistic-looking fake porn videos — and how woman are inordinately targeted. One bogus video, with what is falsely described as “leaked” footage of Johansson, has been viewed more than 1.5 million times on a popular porn site.

“Nothing can stop someone from cutting and pasting my image or anyone else’s onto a different body and making it look as eerily realistic as desired,” Johansson told The Post. “The fact is that trying to protect yourself from the Internet and its depravity is basically a lost cause.”