I think it makes sense, since it's an assumption that the attacker is a male. In security it should be a focus to be as precise as possible and not to introduce assumptions which might cloud your ability to judge other details.
https://en.wikipedia.org/wiki/Man_(word)
Of course, the meaning of words change over time. But also, the meaning of words in a compound expression can be different from the meaning of the word on its own.
(See also how a pickpocket is not a type of pocked, nor is a cutthroat a kind of throat.)
It most certainly is not.
I could talk about linguistics but instead I'll just point out that the default attacker is a woman named Eve.
The purpose of these forced changes is an American understanding of DEI, pretending it's not about that feels like a lie, and being told a transparent lie feels insulting to me because it suggests the person telling the lie considers me dumb enough to not see through it.