Maybe because exfiltration had an established meatspace usage before it was applied to data, and for a lot of people, applying it to data might be an extension

Maybe because exfiltration had an established meatspace usage before it was applied to data, and for a lot of people, applying it to data might be an extension (though a straightforward one) of the usage they're accustomed to to. Probably less necessary on HN than it would be in a forum that isn't explicitly technical.