Billionaire's Breach

She was assigned to protect a billionaire. She was secretly sent to determine whether he deserved to be destroyed. FBI Special Agent Samantha Carter knows better than most that identity can be weaponized. Years ago, she buried the hacker known as Nyx and built a new life hunting criminals instead of becoming one. Then a cyberattack turns a hospital's security system against its own staff-and leaves behind a message meant for her.
WELCOME HOME, NYX. The attack leads straight to Ethan Blake. Billionaire founder of Blake Identity, Ethan built Aegis to make impersonation impossible. Now someone has used his billion-dollar security platform to authenticate people who don't exist, compromise critical infrastructure, and put lives at risk. Samantha's official assignment is simple: protect Ethan while stopping the attack. Her secret assignment is far more dangerous: determine whether Ethan knew his system could fail-and buried the truth.
When Blake Tower is locked down and the enemy proves capable of stealing faces, voices, credentials, and even trusted identities, Samantha and Ethan are forced into a partnership neither of them wants. Every secret makes the other look guilty. Every attack pushes them closer. And the attraction growing between them is becoming as difficult to ignore as the fact that someone knows exactly who Samantha used to be.
Because the man hunting them isn't merely trying to breach Ethan's company. He's turning Samantha's past into a weapon. And before the final countdown reaches zero, Ethan will have to decide whether he can trust the woman investigating him-while Samantha must decide whether the billionaire she's supposed to protect is a victim, a liar.or the only man standing between her and the ghost who taught her how to disappear.
A steamy billionaire romantic suspense featuring forced proximity, an FBI cybercrime heroine, a controlling tech billionaire who has to learn the difference between protection and possession, mutual suspicion, dangerous secrets, high-stakes cyberattacks, and a hard-won HEA. That positioning comes directly from the story: Samantha is officially assigned to protect Ethan while unofficially investigating whether he concealed a dangerous Aegis vulnerability.
The book then forces them into the compromised Blake Tower together, including shared hardened living quarters.