2026 Exact Sciences / Abbott Cancer Diagnostics — ShinyHunters; HIBP 10.87M emails + PHI (Aug 7)

Company-confirmed Cancer Diagnostics intrusion with HIBP-attested scale — Abbott first acknowledged unauthorized access to a limited number of legacy Exact Sciences systems on July 16, 2026 after ShinyHunters listed the unit for pay-or-leak extortion. On August 5, 2026 Abbott updated that statement: some of the impacted files contain personal information and/or personal health information, the review of who is affected was still underway, notifications would follow, operations/manufacturing/lab/product availability were unaffected, and the attack was vishing rather than encryption malware. On August 7, 2026 Have I Been Pwned loaded the published Exact Sciences corpus: 10,869,543 unique email addresses for customers, patients and healthcare providers, with dates of birth, genders, names, phone numbers, physical addresses and personal health data (HIBP marks the breach sensitive). HIBP dates the breach to July 15, 2026 and attributes publication to the ShinyHunters campaign covered by BleepingComputer. recordsAffected is the HIBP unique-email count. Separately, Abbott continues to treat a ShadowByt3$ LabCentral portal claim as distinct (see abbott-labcentral-shadowbyt32026).