If you received this letter from Inotiv, Inc., it’s worth knowing right away that it isn’t a brand-new breach announcement — it’s a follow-up to a notice the company already sent on December 2nd about a security incident that took place around August 5 and August 8, 2025. This second letter mainly exists to give you a fresh activation code for the credit monitoring offer, in case the earlier one got lost, expired, or was misplaced. The letter itself doesn’t restate exactly what category of information was involved, though the fact that Inotiv is offering identity restoration and credit monitoring points to the kind of sensitive personal data those services are typically meant to protect.
Because this letter is addressed individually rather than tied to a published total, we don’t have an aggregate number of affected people from this document. What we do know is that it’s meant for people who were already part of the original notified group from December, so if you’re holding this letter, you were very likely also sent that earlier one.
What data does this letter actually confirm was involved?
- The specific data elements exposed are not spelled out in the text of this follow-up notice — Inotiv points recipients back to the December 2nd letter for those details
- The scale of the protective services being offered (credit monitoring, identity restoration, $1 million identity theft insurance) suggests the underlying incident involved information sensitive enough to warrant that level of coverage
- If you no longer have your December 2nd letter, Inotiv says you can call their support line to get that original information again
Inotiv is providing 24 months of complimentary credit monitoring and identity theft protection through Experian IdentityWorksSM, along with Identity Restoration support that stays available for two years from the date of this letter regardless of whether you activate the monitoring itself. To sign up, enroll by March 31, 2026 at 11:59 pm UTC at https://www.experianidworks.com/credit using the activation code printed in Attachment A of your letter — note that this code is different from the one sent in December, but either one will work since you only need to enroll once. Identity Restoration terms are posted at http://www.ExperianIDWorks.com/restoration.
Steps worth taking whether or not you sign up for the monitoring
- Enroll in the Experian IdentityWorks offer using either activation code before the March 31, 2026 deadline, since it won’t work after that date
- Pull your credit reports and look them over for accounts or inquiries you don’t recognize
- Set up alerts on your bank and credit card accounts so you’re notified of new transactions right away
- Consider a credit freeze with the three major bureaus if you want to block new accounts from being opened in your name entirely
- Think about signing up for a service like Aura or LifeLock, which can alert you if your personal information turns up somewhere it shouldn’t be
- Keep the engagement number from your letter somewhere handy — you’ll need it if you call Inotiv or Experian with questions
If you have questions about this notice or need help locating your original December letter, Inotiv can be reached at (833) 918-5956, Monday through Friday from 8 am to 8 pm Central Time, excluding major U.S. holidays.