A case could be made for that, though I do think there are substantial differences between electronic warfare and what is generally referred to as cyberwarfare (currently, at least; the technologies will eventually grow together). Someone who is recognized as an electronic warfare specialist might very well be completely lost when it comes to defending against or conducting a cyberwarfare attack. There is a lot of overlap--encryption being the main shared set--but there's still a technology gap. E-war can be conducted with equipment half a century old, for one thing.
On the other hand, "cyberwar" is such a ridiculous gee-whiz term; I've always hated it.
Bookmarks