Allied Telesis, a maker of networking hardware, says it discovered suspicious activity on its network on May 20, 2024. After investigating, the company determined that an unauthorized actor had actually gotten into certain systems earlier, between April 30 and May 20, 2024, and copied files off of them during that window. Allied Telesis says it reported the matter to federal law enforcement and spent months reviewing exactly which files were taken and whose information appeared in them before sending out notification letters in April 2025.
The letter is written to a single named recipient rather than describing a broad group, and Allied Telesis has not stated in its regulatory filing how many people in total received this notice. If you got this letter, it means your name showed up somewhere in the files the intruder accessed.
What exactly did Allied Telesis say was taken?
- Your full name
- An additional piece of information that the letter refers to only as a placeholder field, meaning the specific data type isn’t spelled out in the notice text itself
Because that second field wasn’t filled in correctly in the copy of the letter that was filed, we can’t tell you from this document alone whether it was a Social Security number, an account number, or something else. If your own letter names a specific data type in that spot, treat that as the accurate version — this write-up is based strictly on what’s in the filed notice.
Allied Telesis is offering 24 months of free credit monitoring and identity restoration services through Experian IdentityWorks. You’ll need to enroll by July 31, 2025 at 11:59 pm UTC at https://www.experianidworks.com/credit using the activation code printed on your mailed letter — that code isn’t included in the public filing, so check the physical or PDF copy you received.
Practical next steps if your name was in these files
- Enroll in the free Experian IdentityWorks membership before the July 31, 2025 deadline so the identity restoration support and credit monitoring don’t lapse
- Pull your free credit reports at annualcreditreport.com and look over them for accounts or inquiries you don’t recognize
- Because the letter doesn’t confirm whether more sensitive identifiers were involved, consider placing a fraud alert or credit freeze with Equifax, Experian, and TransUnion as a precaution — it costs nothing and only takes a few minutes per bureau
- Watch your bank and card statements over the next several months, since stolen data is sometimes used well after a breach is disclosed
- You may also want to sign up for a service like Aura or LifeLock, which can alert you if your information appears elsewhere online
- Keep the letter and any enrollment confirmation numbers — you’ll want them on hand if you ever need to prove eligibility for identity restoration services later
If you have questions about the incident, Allied Telesis can be reached at 1-833-745-0871 (Monday through Friday, 8am to 8pm Central Time) or by mail at 3041 Orchard Parkway, San Jose, CA 95134.