Crypto by Annie Nicholas

Aliens are real. Diana Brooke knew this. They came like burglars in the dark, stealing Earth’s natural resources. In kind, she makes them pay for their thefts by tracking them across the planet and pilfering from them. Advance tech brought in good money after all. On a remote island, the group she’s tracked isn’t taking from the planet. They’re abducting humans.
Crypto is an Intergalactic Intelligence agent hell bent on tearing apart a human trafficking ring, but he’s separated from his team. There are many slavers guarding their island base and human casualties will be high if he attempts a rescue by himself. Then he confronts a female human clad in mismatched alien warrior tech. She is the opposite of all his expectations of this planet’s fragile race.
She makes it clear she hates aliens, but is willing to put aside her prejudice to help him save her people. His nanotech makes him appear like a man but his real form is terrifying. Can he steal this thief’s heart so she can see past their differences?