How do you stop people from accessing files they shouldn’t?

When I first managed a team, I made the mistake of giving everyone access to one shared folder. That worked until someone accidentally sent the wrong file outside the group. Since then, I’ve been stricter with access controls. Everyone only gets to see what they actually need. I also added encryption and two-factor login for extra safety. A big help for me was reading the advice on https://www.akappleug.org/, where they explain how to use multi-layer protection without making it complicated. It’s actually simple once you set it up. Now I don’t worry about unauthorized access, and my team feels more confident too. It keeps things professional and protects the business.