A successful breach of a family member’s account due to their bad security shouldn’t result in the breach of my account. That’s the problem

I mean...

You volunteered to share your info with that person.

And that person reused a email/password that was compromised.

How can 23andme prevent that?

It sucks, but it's the fault of your relative that you entrusted with access to your information.

No different than if you handed them a hardcopy and they left it on the table of McDonald's .

Quick edit:

It sounds like you think your account would be compromised, that's not what happened. Only info you shared with the compromised relative becomes compromised. They don't magically get your password.

But you still choose to make it accessible to that relatives account by accepting their request to share

I doesn't. Sharing that info was opt-in only. In this scenario, no 23andMe accounts were breached. The users reused their credentials from other sites. It would be like you sharing your bank account access with a family member's account and their account getting accessed because their banking password was "Password1" or their PIN was "1234".

Yep it was 14,000 that were hacked, the other 6.9 million were from that DNA relative functionality they have. Unfortunately 23andMe's response is what to expect since companies will never put their customers safety ahead of their profits.

So if you enabled a setting that is opt-in only that allows sharing data between accounts and you are surprised that data was shared between accounts how is that not your fault?

afaik there was no breach of private data, only the kind of data shared to find relatives, which is opt-in and obviously not private to anyone who has seen how this service works. In other words, the only data "leaked" was the kind of data that was already shared with other 23andMe users.

You shouldn’t have shared your information with someone who is untrustworthy then. Data sharing is opt-in.

How do you and the surprising number of people who upvoted you want options on websites to work?

These people opted into information sharing.

When I set a setting on a website, device, or service I damn sure want the setting to stick. What else would you want? Force users to set the setting every time they log in? Every day?

Wtf?

Even if you didn’t reuse a compromised password yourself, the fact that your relatives did indicates that you’re genetically predisposed to bad security practices. /s

A successful breach of a family member’s account due to their bad security shouldn’t result in the breach of my account. That’s the problem.

How the hell would they prevent that if you voluntarily shared a bunch of information with the breach account? This is like being mad that your buddy's Facebook account got breached and someone downloaded shared posts from your profile, too. It's how the fucking service works.