Secure against WHAT? I don't think you can get into lots of trouble using a recent and updated version of Firefox, Chrome, Edge. Just keep updating. I don't use

Secure against WHAT? I don't think you can get into lots of trouble using a recent and updated version of Firefox, Chrome, Edge. Just keep updating. I don't use Mac/iOS, can't say anything about Safari. If you're concerned about privacy however, then that's a completely different story (that I'm happy to discuss, but probably in another thread).