Asklemmy

Don't upload photos/videos/voice recordings of yourself to the internet, ever. This alone won't guarantee your likeness and voice can't be replicated with AI since there could always be photos/videos/voice recordings of you out there that you're not aware of (from a data leak, etc) but it will significantly reduce your attack surface. Unless you're rich or otherwise high profile, scammers are most likely not targeting you specifically but just scraping the internet for training data and picking targets based on who they have the most video/audio of and can therefore produce the most convincing AI fakes of. Or buying from data brokers who have scraped the internet for them. I could be wrong, but I doubt there are many scammers going to the effort of buying/stealing, say, call recordings from your phone company or virtual meeting provider to scam some random person without much wealth.

Oh, and never link to your IRL friends and family online. Never add them on Facebook (just never use Facebook tbh), or Discord, or anywhere else that's not E2EE. Scammers can't target your grandparents if they have no idea who they even are.