It's a three-step... it's a three-step systematic attack on the entire national infrastructure. Okay, step one: take out all the transportation. Step two: the financial base and telecoms. Step three: You get rid of all the utilities. Gas, water, electric, nuclear. Pretty much anything that's run by computers which... which today is almost everything. So that's why they call it a fire sale, because everything must go.

This detailed explanation of a 'fire sale' - a three-step systematic attack on national infrastructure - comes from Die Hard 4.0 (Live Free or Die Hard, 2007). The villain Thomas Gabriel explains this cyberattack plan to John McClane. The quote breaks down how terrorists would systematically disable transportation, finance, and utilities to collapse society. The other films listed don't feature this specific cybersecurity plot.