In 2023, 23andMe suffered a credential-stuffing attack that exposed the genetic ancestry and health data of approximately 6.9 million users — including highly sensitive inferred ethnicity and health predisposition information. Genetic data is special category data under Article 9 GDPR, attracting the highest level of legal protection. 23andMe filed for bankruptcy in March 2025, making it urgent to exercise your rights before your data changes hands.
⚖️ Regulatory action: 23andMe was fined £2.31 million by the UK ICO in June 2025 for failing to implement appropriate security measures to protect customers' genetic data under Article 32 GDPR.
Attackers used credentials from earlier, unrelated breaches to access approximately 14,000 23andMe accounts via credential stuffing. By exploiting the 'DNA Relatives' feature, they harvested the profile data of a further 6.9 million connected users. The stolen data included predicted ethnicity, health predispositions, and relative match information. The breach disproportionately targeted Ashkenazi Jewish and ethnically Chinese users.
Genetic data is the most sensitive personal information under GDPR — it is immutable, uniquely identifies you, and reveals information about your relatives without their consent. With 23andMe having filed for bankruptcy and been acquired in 2025, exercising your right to erasure now is especially important to prevent your genetic data being used for purposes you never consented to.
You have two key rights under GDPR:
This letter is pre-addressed to 23andMe, Inc., the official EU data controller for 23andMe.
Dear Data Protection Officer,
I am writing to exercise my rights under the General Data Protection Regulation (GDPR). As an individual whose personal data you process, I am requesting the following information:
Below is my information for your reference:
Name:
Email:
Address:
This request is of utmost importance to me and should not be ignored. The GDPR mandates that you respond within one month. Failure to comply may result in further action being taken.
Thank you for your prompt attention to this matter.
Sincerely,
1. Copy and send this letter to the data controller of the organisation.
2. Follow up until you hear back. The GDPR requires a response within one month.
3. No response? Lodge a complaint with your local data protection authority.
Select your country to find your data protection authority: