Personal and Health Information of 22.6 Million Aflac Clients Stolen in Cyberattack

At the start of 2026, a significant cybersecurity breach that was disclosed heightened awareness of digital vulnerabilities within the American insurance industry, after Aflac, one of the largest supplemental insurance providers in the country, confirmed that a sophisticated cyberattack, which took place in June 2025, compromised approximately 22.65 million individuals’ personal and protected health information. 

An intrusion took place during the summer of 2025 and has since been regarded as one of the biggest healthcare-related data breaches of the year. The attack pattern of advanced cybercriminals has shifted significantly from targeted low-value sectors to high-value sectors that handle sensitive consumer data, illustrating a noticeable shift in their attack patterns towards those sectors. 

In an effort to determine who is responsible for the breach, investigators and threat analysts have attributed it to the Scattered Spider cybercriminal collective, also referred to as UNC3944, who are widely known for their evolving campaign strategies and earlier compromises targeting retailers across the United States and United Kingdom.

It has been reported that Aflac contained the incident within hours of its detection and confirmed that no ransomware payload has been deployed. However, the attackers have managed to extract a wide range of sensitive info

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