American pharmaceutical company Inotiv has disclosed that some of its systems and data have been encrypted in a ransomware attack, impacting the company’s business operations.
In a filing to theU.S. Securities and Exchange Commission (SEC), Inotiv says that the cyberattack occurred on August 8 and took action to contain the breach.
“On August 8, 2025, Inotiv, Inc. became aware of a cybersecurity incident affecting certain of its systems and data,” Inotiv informs.
“The Company’s preliminary investigation determined that a threat actor gained unauthorized access to, and encrypted certain of, the Company’s systems.”
Inotiv started an investigation with the help of external security experts and notified law enforcement authorities of the incident.
The attack was claimed by the Qilin ransomware gang, who alleges to havestolenaround162,000 files amounting to 176GB. The threat actor has also published data samples on their leak site.
