editing contacts

That's a great question, but the vCard format Apple uses is an industry standard one used by many different products and services. I understand you want to import your Contacts into Excel but Apple has no interest in Excel.

You might find suggestions for importing vCards into Excel on an Excel product user support forum, so I encourage you to do that.

Many times this "free service" are a door for troyans, malawares and so on.

You're right. I wouldn't use it either, certainly not for anything sensitive. Every single product advertised as safe, effective, "recommended" etc. ought to be regarded with suspicion, especially if it's "free".

I understand you want to convert exported vCards to csv, and I assume you found a website that offers to do that for you, such as this one:

http://labs.brotherli.ch/vcfconvert/

I also understand despite its claims to the contrary:

"The uploaded file will not be stored permanently nor will the converted addresses be kept on the server."

... you are reluctant to use it the way it is due to privacy concerns.

As it states,

"You can also download the script and run it locally."



Why Apple does not have a right tool or an App to work without risks?

They do. It's called "Contacts."

However, mass updates are not simple in Contacts, so you can use TextEdit for those (but there are better text editors that are free).

Why not just edit the vCard file. It's just text. Why bother converting it, edit, then convert back.