u/CostPractical4830

This isn't about me but a family member, she's being harassed by a co-worker and he's the tech guy of the company. She filed a complaint and he has been put on an unpaid leave. She saw her camera light flicker and the little logo that comes up when she's putting in headphones or a microphone came up. She told her boss but they won't do anything. It's a pretty small company so no HR. Is there a way that he can access the computer when not allowed to? If yes, how do you know and how do you prevent it. She doesn't feel safe and I just want to help her :(