Can you clarify why you think it’s “borderline illegal”? I assume you are referring to GDPR, but I’m not aware of any reason why the normal “legitimate interest” legal basis wouldn’t apply to group organizers.
Maybe I’m just wrong. I only have a lay understanding of GDPR, but my impression was that keeping any data that people had shared with you without their knowledge was getting into sketchy territory.
Can you clarify why you think it’s “borderline illegal”? I assume you are referring to GDPR, but I’m not aware of any reason why the normal “legitimate interest” legal basis wouldn’t apply to group organizers.
Maybe I’m just wrong. I only have a lay understanding of GDPR, but my impression was that keeping any data that people had shared with you without their knowledge was getting into sketchy territory.