Play video content EXCLUSIVE TMZ.com

Blockbuster director Zack Snyder has an idea for Hollywood to avoid another film getting hacked -- like the new 'Pirates of the Caribbean' flick -- but it's gonna require embracing LOW tech.

We got Zack -- who's currently working on "Justice League" -- at LAX Tuesday right after hackers said they'd release 'Pirates 5' on the Internet if Disney didn't pay an enormous ransom ... in Bitcoin, no less.