Ransomware Attack at Inotiv: What Happened?

In a concerning development, the pharmaceutical company Inotiv has revealed that they suffered a ransomware attack, compromising the personal data of over 9,500 people. This breach began on August 8 and caused major disruptions, locking the company out of several crucial systems and data storage networks.

Inotiv responded to this serious incident by notifying the US Securities and Exchange Commission (SEC). They’ve also been working diligently to restore system access and finish an extensive investigation into the attack, which spanned from August 5 to 8, 2025.

Data Compromised and Actions Taken

According to a report to the Maine Attorney General, the stolen data includes sensitive details like names, addresses, and more serious identifiers such as Social Security numbers and health insurance information. This breach doesn’t just affect employees—current and former—but also touches their families and associates connected through company acquisitions.

In response, Inotiv is providing affected individuals with 24 months of complimentary credit monitoring and identity theft protection. They’re still evaluating the broader financial and operational implications of the breach.

Though Inotiv hasn’t confirmed who the attackers are, it’s noted that a group named Qilin claimed responsibility, asserting they took 176 gigabytes of data, briefly posting it on their Tor site before removing it. Stay informed as we monitor this unfolding situation for further updates.

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