[nine_k]

Basically any technology that makes any difference will have a military value, and will be used by the military.

One of the few things that are not obviously, if in any way at all, usable for any military purposes is targeted advertising. Whether it's used by the good guys more is an interesting topic.

[hermitcrab]

Bad actors are using ad tech to subvert democracy (cf Cambridge Analytica).

[jeremyjacob]

I receive targeted recruitment ads from the U.S. Army and Navy frequently. Targeted advertising appears to be a valuable tool in encouraging young people to join the military.

[keepamovin]

That's not actually true about ad targeting. The tech used there is a big information warfare thing, which has major military applications