I had the same concern about keeping my contacts secure while editing and sharing. I tried GainTools Address Book Manager, and it really helped. It has a backup option so I don't have to worry about losing data, and it also lets me convert VCF to CSV for safe storage. The built-in VCF to CSV Converter worked smoothly without messing up any details. For me, it's been a reliable way to manage contacts on Windows while keeping everything secure and organized.