2026 Colorado Secretary of State — confidential voter records exposed; 59 profiles accessed (Aug software error)
Data compromised
Confidential voter registration data for electors who requested address confidentiality; SOS says 59 individual profiles were accessed between Aug 14 and late August; exposure pool exceeded 130,000 confidential voters
Technical writeup
Verified state government disclosure — August 28–31, 2026. Colorado Secretary of State Jena Griswold’s office confirmed a voter-registration software update error left more than 130,000 confidential-voter records publicly accessible for more than a week beginning around August 14. Accessing a specific confidential profile required the requestor to know the voter’s legal name, date of birth, and ZIP code; the office reported 59 such profiles were accessed before remediation. CPR and Denver7 reported victims included protected voters such as law-enforcement officials and political candidates. The SOS contacted affected individuals and said it regretted the incident. recordsAffected 130000 reflects the confidential-voter population exposed; 59 profiles confirmed accessed; companyConfirmed true.
Root cause
Voter-registration software update error left more than 130,000 confidential-voter records publicly accessible for over a week starting ~Aug 14; 59 profiles accessed when requestor knew legal name, DOB, and ZIP
References
- https://www.cpr.org/2026/08/31/colorado-voter-data-breach-michael-allen-jena-griswold/
- https://www.denver7.com/news/local-news/colorado-secretary-of-states-website-exposed-133-000-confidential-voter-profiles-for-11-days
- https://coloradosos.gov/pubs/newsRoom/pressReleases/2026/20260828CDOSLetterToCSP.pdf