TIL this about how you can protect personal information online
Another piece of advice is to use anonymous account names whenever possible and to not reveal the real identity to anyone.
If you do have to give your data to a company, give them only the minimum that you can get away with. If a field is optional, keep it blank. If you can use the service with dummy information in the required fields, use it that way.
Julien Picalausa, Developer at Vivaldi