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@tshirtman @osc

(2/n)

...by just knowing which number called which numbers when, how frequently.

At that point, the data was "pseudo-anonymized," I'd say.

Now, let's add names, addresses, social-security numbers of just some an that anonymity is gone.

This is just phone numbers.
Look at the data-grab of the #Threads app, illegal in the EU at present, but just as an example.

If you set up your account on #Mastodon with a new, secure e-mail address, then you can stay "anonymous,"...