A few habits go a long way on any platform with open chat and a public profile. Avoid sharing personal details like your address, school, or financial information with people you've only met on Chillverse, even if a conversation feels friendly. Remember that Global Chat is visible to every active player, so treat anything you post there as public.
If you'd rather not be found or messaged by people you don't know, consider setting your presence to Invisible (covered in Account & Profile) so you can't be searched for or added to games, and remember that blocking someone stops them from following or interacting with you going forward. If something ever feels off, trust that instinct and block first — you can always look into it further with a support ticket afterward.