Exact Sciences - 10,869,543 breached accounts

In July 2026, Exact Sciences (now owned by Abbott Laboratories) was the target of a ShinyHunters “pay or leak” extortion campaign . The group claimed to have obtained data from the company’s cancer diagnostics business, which they later published publicly. The breach contained 10.9M unique email addresses belonging to customers, patients and healthcare providers, along with names, addresses, phone numbers and health records.