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Incident

Evergreen Treatment Services

Incident posture

Attack window
May 2026
Location
United States of America
Status
Unknown
CIA posture
Available to members
Updated
2026-10-17 12:09

Linked entities

Victim
Evergreen Treatment Services
Threat actors
0 actors
Sources
2 sources

Timeline

Occurred
Pending
Discovered
Pending
Disclosed
Pending
Resolved
Pending

Summary

The supplied articles do not contain any details about an incident involving Evergreen Treatment Services. Instead, the articles describe a breach of Education Testing Service that exposed personal information of millions of California students. According to the reports, an unauthorized party accessed files using a compromised login credential over several months, and the breach was discovered after the intrusion ended. The exposed data included names, addresses, demographic information, and disability status, but did not include social security numbers or financial data. Officials notified affected individuals, offered identity‑theft protection, and launched a law‑enforcement investigation.

Motives

Detailed motive labels are available to members.

0 motives

TTPs

Detailed technique labels are available to members.

0 techniques

Description

The supplied article describes a cyber incident that occurred in 2026 targeting the Education Testing Service (ETS), a nonprofit that administers standardized exams for California public schools. According to the report, an unauthorized party used a compromised login credential to copy files containing student data between May 22 and September 18, 2026. ETS did not detect the intrusion until September 25, after the exfiltration had ended. The breach exposed the names, addresses, demographic information, and disability status of approximately seven million California public school students enrolled over the prior three school years. Officials confirmed that the stolen data did not include social security numbers, driver’s license numbers, passports, or financial account information, nor did it contain parents’ or guardians’ data. After discovery, ETS took the affected server offline, disabled the compromised account, notified law enforcement, and began offering two‑year identity‑theft protection services to affected students.

The article contains no reference to Evergreen Treatment Services or any incident involving that organization. Consequently, there are no factual details in the provided source material about a breach, attack timeline, compromised systems, attacker actions, detection, containment, or impact concerning Evergreen Treatment Services. Because the task requires a narrative based solely on the information given, and no such information exists for Evergreen Treatment Services, a detailed account cannot be constructed without resorting to speculation, which is prohibited. Therefore, the only accurate statement that can be made is that the source material does not support a narrative of an incident involving Evergreen Treatment Services.

Sources

Sources available to members: 2 sources.

CSIDB