Pagesigner not working: What to do at the next dispute?

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So without trusting them, what dangers would be considerable?

  1. Get a copy of your login-credentials?

You are safe with certificate based authentication at login.

  1. “Hijack” your login-session?

No severe harm can be made with certificate based signing of risky operations like moving of funds.

  1. Observe your personal data?

Possible.