Trouble in a Tight Dress by Lori Sjoberg

Security expert Austin Flint knows all about trouble. He fought it while serving in the Marines, and now he battles it at home as the head of Six Points Tactical & Security. In his line of work, he can’t afford to be distracted by anything…or anyone, and that includes Nina, his cyber security expert. She’s got a chip on her shoulder, a smart mouth. And a body that just doesn’t quit. She’s also his employee, which makes her off limits, no matter how badly he wants her. But when her life is threatened by the Russian mafia, he’ll do whatever it takes to protect her, even if that means breaking his own code of honor and claiming her as his own. Trouble is, he doesn’t know about her past, and what he doesn’t know might get them both killed.