In early October 2023, it emerged that a bad actor had used stolen passwords to gain unauthorized access to 23andMe accounts. This has had some knock-on effects, and the situation with segment data has changed:
- 23andMe have removed access to ‘relatives in common’ (aka shared matches) and segment data
- Several other companies have restricted access to segment data on their site
Luckily we can still get segment data from everywhere except 23andMe (and AncestryDNA, where it was never available in the first place). But communication by the testing companies has been a bit patchy. I’ve therefore created the table below to summarize the current situation with regard to access to:
- Individual segment data (the segments you share with an individual match)
- Bulk segment data (a file containing all segments you share with all matches in that database)
I’ll endeavour to keep this post up to date as the situation changes.
Company | Individual segments | Bulk data | Overall status | Notes |
23andMe | No | No | Temporarily removed | From their site: “As part of the ongoing security investigation, we have temporarily disabled some features within the DNA Relatives tool as an additional precaution to protect the privacy of our customers.” |
AncestryDNA | No | No | No access | AncestryDNA has never made segment data available |
FamilyTreeDNA | Yes | No | Individual matches available | In November 2023 the following message appeared in the FamilyTreeDNA chromosome browser: “The option to download your matches list and segment data is currently unavailable as we work on enhancements. We appreciate your patience and apologize for any inconvenience.” |
Gedmatch | Yes | Yes | Available | |
Geneanet | Yes | Yes | Available but only until Dec 20th 2023 | Alas, Geneanet announced today that it will be closing its DNA features down |
Living DNA | Yes | No | Individual matches available | Living DNA launched segment data in July 2023 for individual matches but have not yet made a download of bulk match segments available |
MyHeritage | Yes | No | Individual matches available | In October 2023, MyHeritage removed the links: – Export shared DNA segment info for DNA Matches – Advanced options > Download shared DNA info You can still access segment data for individual matches via their separate chromosome browser tool (when a shared match triangulates there’s also a link to this tool) |
You can find more detailed information on where you can still find segment data in the help pages Where do you find the segment data? and How do you use the import function?
Further reading
- 23andme: Addressing Data Security Concerns
- Edison Williams: Update Regarding Family Tree DNA Services
- Electronic Frontier Foundation: What to Do If You’re Concerned About the 23andMe Breach
- Leah Larkin: The 23andMe Hack
- Roberta Estes: The 23andMe Data Exposure – New Info, Considerations and A Pause Strategy
- Roberta Estes: 23andMe: DNA Relatives, Connections, Event History Report and Other Security Tools
- Your DNA Guide: Ask the experts with Michelle Leonard
Contact info: @dnapainter / jonny@dnapainter.com