Contact: mailto:cstuder@existenz.ch Contact: https://signal.me/#eu/oURXfjTEzZNlVTZVgalubCKkgIkqcAb1p4vkQDNVs4O9YlHu2t5KIpthY7p4-v4j Contact: https://threema.id/5MHRBABV Expires: 2026-01-31T23:00:00.000Z Preferred-Languages: de, en, fr