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Massive Kelly Benefits Data Breach Affects Nearly 500,000 Customers

Massive Kelly Benefits Data Breach Affects Nearly 500,000 Customers

Kelly Benefits, a payroll and benefits company, suffered a breach in December 2024, exposing the sensitive information of nearly half a million people.

The exposed data included names, social security numbers, tax ID numbers, health insurance information, and medical information. Initially, the breach was believed to have affected only 32,000 individuals, but later estimations indicate that this number could be as high as 410,000.

Laptop with warning signs

The investigation and aftermath

The Maine Attorney General’s Office revealed the data theft, and a thorough investigation finalized in March 2025, found that the cyberattack took place between December 12 and December 17, 2024. During this time, hackers infiltrated Kelly Benefit’s IT infrastructure, allowing them to exfiltrate highly sensitive data. At this time, it’s still unknown who’s responsible for the attack.

Kelly Benefits is now facing a long list of class action lawsuits from its customers, who allege failure to protect highly confidential information. To bring them some relief, the company offered them identity protection services and credit monitoring for free. The actual cost of this data breach is still unclear.

Businesses and people: Protect your data today

Cyberattacks will hardly slow down, which makes it essential for individuals and businesses to take cybersecurity seriously. If you don’t think that’s the case, we recommend reading our post about the most significant data breaches ever recorded. The cyber landscape is growing rapidly, and businesses and people are failing to keep up with that progress.

To help make it more difficult for cybercriminals to target and attack you, we recommend checking out the following articles:

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Sérgio F.
Sérgio F.

From a young age, Sérgio showed a great interest in music and gaming, which served to boost his language skills in the years to come. His connection with creative content started in the early days of his first band, as he was in charge of all written and non-written materials. Later on, to further develop his skills, he studied Communication and Media. He then worked as a content producer, translator, designer, and marketer, until finally taking on the role of Content Creator for Best Reviews. You’ll often find Sérgio writing and producing music, drumming, gaming, going to live shows, and reading about the latest trends in technology.

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