The Friends star has stepped behind the camera to direct Clive Owen and Catherine Keener in harrowing new film Trust, about a teenager lured to a motel for sex by an online predator old enough to be her father.
Schwimmer, who is expecting a baby with wife Zoe Buckman, admits he's shocked by how easy it is for youngsters nowadays to view "some kind of pornography online" - because as a teenager he struggled to buy a copy of men's magazine Playboy.
He tells FOX411's Pop Tarts column, "When I was 13 it was a real challenge to get your hands on Playboy. But today unfortunately most kids before the age of 13 have seen pornography online and not just a still image - moving pictures.
"If you're a nine-or-10-year-old, and your first encounter with sexuality is some kind of pornography online, than that's definitely a loss of innocence."
The actor/director, who is a longtime campaigner for the Rape Foundation in Santa Monica, California, is also unhappy that brand advertising appears to have become more provocative in recent years.
He adds, "There used to be a big uproar about Brooke Shields in her jeans 15, 20 years ago, but now people take it for granted.
"I find it pretty disturbing to see a huge billboard in New York - you see a young girl that looks 15 maybe, although you can't tell. You're like, 'Wait a minute she's in her underwear on the floor of a dirty hotel room or something.' But you just drive by and you're used to it. I think it's a problem..."