After 23andMe’s board of directors resigns, the president of encrypted messaging app Signal joins other security experts in urging 23andMe users to consider deleting their data.

The once-hot Silicon Valley startup has seen its stock’s value decline 99% and is struggling to survive. That has put the spotlight on the genetic data it has on 15 million people.

Me's financial troubles may lead to customers' genetic data exchanging hands if an acquisition occurs. Here's how to delete your 23andMe data beforehand.

“While we will delete the majority of your personal information, we are required to retain some information to comply with our legal obligations,” reads the company’s website, which refers users to their Privacy Statement to learn more about what information is retained. After deleting your information, you must confirm your request via email.