Where does the Adicet Bio, Inc. case file come from?

Every entry is taken from the breach report Adicet Bio, Inc. lodged with the Massachusetts Attorney General. Nothing here is estimated.

Why do the incident date and the report date differ?

Companies usually investigate before they report. The gap between the two dates shows how long that took.

What does the records-affected figure count?

It is the number the company gave the state. It can cover residents of that state only, so the national total may be higher.

Does this case file change over time?

Yes. When a company files an update or a new state publishes its copy of the report, the dates and counts here are refreshed.

Case file

Case File: Adicet Bio, Inc. Data Breach

This file collects the dated facts on record for the Adicet Bio, Inc. incident. The state report is dated May 30, 2025.

Timeline

May 30, 2025Report filed in MassachusettsDate the notice was lodged with the Massachusetts Attorney General.

Case facts

Filing state: Massachusetts
Date reported: May 30, 2025
Receiving office: Massachusetts Attorney General

Case notes

Adicet Bio, Inc., a clinical-stage biotechnology company based in Massachusetts, officially reported a data security incident to state authorities on May 30, 2025. The company specializes in developing engineered immune cell therapies for serious diseases, a field that involves handling a significant volume of sensitive operational data. This filing confirms an event where personal information held by Adicet Bio, Inc. was exposed due to unauthorized access.

The details of the incident, including the specific types of personal information involved and the number of individuals affected, were not specified in the public record. Adicet Bio, Inc. maintains a critical role in managing various types of sensitive data as part of its cutting-edge research and development activities in the life sciences sector. The reporting of this incident indicates a potential compromise within their systems.

According to the filing, the investigation into this data security incident is currently ongoing. As such, further details regarding the nature and extent of the compromise may become available as the company continues to assess the situation. Such investigations often seek to identify the methods used by unauthorized actors and to secure affected systems.

Individuals who receive a formal data breach notification letter from Adicet Bio, Inc. should carefully read the information provided. It is always recommended to remain vigilant for any unusual activity across personal accounts and to consider placing a fraud alert or security freeze on credit reports. Regularly review account statements for any unauthorized transactions and be wary of unexpected communications requesting personal details.

Questions about this case file

Where does the Adicet Bio, Inc. case file come from?: Every entry is taken from the breach report Adicet Bio, Inc. lodged with the Massachusetts Attorney General. Nothing here is estimated.
Why do the incident date and the report date differ?: Companies usually investigate before they report. The gap between the two dates shows how long that took.
What does the records-affected figure count?: It is the number the company gave the state. It can cover residents of that state only, so the national total may be higher.
Does this case file change over time?: Yes. When a company files an update or a new state publishes its copy of the report, the dates and counts here are refreshed.

Massachusetts data breaches

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Timeline

Case facts

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