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Case File: Stoss Landscape Urbanism Data Breach

This file collects the dated facts on record for the Stoss Landscape Urbanism incident. The state report is dated January 9, 2026.

Timeline

  1. January 9, 2026Report filed in MassachusettsDate the notice was lodged with the Massachusetts Attorney General.

Case facts

Filing state
Massachusetts
Date reported
January 9, 2026
Receiving office
Massachusetts Attorney General

Case notes

Stoss Landscape Urbanism has filed a formal notification regarding a data security incident with the Massachusetts Attorney General's office. This official report, dated January 9, 2026, confirms that the firm is actively investigating an unauthorized compromise within its network systems. The nature and scope of this security event are currently under review.

Stoss Landscape Urbanism operates at the intersection of landscape architecture, urban design, and planning, undertaking complex projects globally. In the course of its business, the firm collects and maintains various types of personal information pertaining to its employees, contractors, and clients, which are essential for its operational activities.

The specific circumstances surrounding how the breach occurred have not been detailed in the public filing. However, the report indicates that unauthorized access to Stoss Landscape Urbanism's digital environment took place, meaning that data stored on their systems may have been exposed.

While the exact categories of personal information involved in this incident have not been specified, such events commonly involve data used for identification or record-keeping. The firm's notice signals that the information involved could pertain to individuals associated with Stoss Landscape Urbanism through employment or client relationships.

Individuals who receive direct notification from Stoss Landscape Urbanism should review the provided information carefully. It is broadly recommended to remain watchful for any unexpected communications, unsolicited password reset requests, or unusual activity across your personal accounts. Regularly reviewing financial statements and credit reports can help in identifying any potential misuse of your data.

As a preventative measure, consider placing a fraud alert on your credit reports with the major credit bureaus. This can make it more difficult for unauthorized parties to open new accounts in your name. Additionally, it is always a good practice to use strong, unique passwords for all online accounts and enable multi-factor authentication whenever available to enhance overall digital security.

Questions about this case file

Where does the Stoss Landscape Urbanism case file come from?
Every entry is taken from the breach report Stoss Landscape Urbanism 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.

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