Help Determining Safe/Unsafe Ways of Integrating Claude For Development?

I’m a junior developer that’s been using Claude completely in the browser. When I use it professionally I never feed it sensitive client information. Whenever I would need to, I feed it dummy records as examples. I’m aware that other people have Claude integrated in all sorts of ways - using Claude code, or directly in their IDE or what have you. I’m looking for advice on ways I could more effectively use Claude outside of the browser while still maintaining best security practices. My company has no guidelines for or against AI, so I’m just trying to be generally responsible. I don’t want to install Anthropic brand spyware or allow an AI gone Terminator to mess up the company or my personal computer. I’m sure this concern is laughable and ignorant but I’d rather be safe than sorry.