23andMe has gone bankrupt and your personal privacy and that of your children - relatives - is at risk. This could effect 15 million people. Since the company is up for sale, it's reasonable to think that your DNA is what would make it interesting to a buyer...
NPR ORG : HOW TO DELETE YOUR 23ANDME GENETIC INFORMATION
Steps to delete are at the link above.
Excerpt: Bonta also provided this advice for destroying your test sample and revoking permission for genetic data to be used for research :
If you previously opted to have your saliva sample and DNA stored by 23andMe, but want to change that preference, you can do so from your account settings page, under "Preferences."
If you previously consented to 23andMe and third-party researchers to use your genetic data and sample for research, you may withdraw consent from the account settings page, under "Research and Product Consents."
If you previously consented to 23andMe and third-party researchers to use your genetic data and sample for research, you may withdraw consent from the account settings page, under "Research and Product Consents."