Never attack young humans specifically. It’s not recommended to harm them in the process of war, but so long as they’re not the original target then humanity will usually mourn them as casualties of that war.
But if you intend to use human attachment to their young against them? Do not. Do not even think of doing so. That’s what the Hellox did.
The Hellox are now an endangered species, only kept alive by Humanity adopting their young.
Humans have prisons where they send the worst of their criminals. Murderers, rapists, high crime, drug lords, and so on. These villains agree on very little, but even in these depths of depravity and despair there is still one kind of being they will all independently decide to severely injure or murder in return. Those who kill or defile young. Anyone’s young.
Humans will not spare those of their own species who target young. Why would they spare you?