23andMe was hacked and DNA records of 7 million people were compromised. Originally they said it was 14,000.
They just sent out an innocuous sounding email about change in Terms of Service.
If you do not respond rejecting the change, you will give up the ability to be part of the class action lawsuits that are being filed, or take action in court against them.
They sent this out before they are notifying those whose data were breached.
Strongly recommend you opt out of the change.