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Incident

Sherman School

Incident posture

Attack window
Aug 2019
Location
United States of America
Status
Historical
CIA posture
Available to members
Updated
2025-11-03 00:00

Linked entities

Victim
Sherman School
Threat actors
0 actors
Sources
1 source

Timeline

Occurred
Aug 2019
Discovered
Pending
Disclosed
Pending
Resolved
Pending

Summary

A Connecticut educational institution experienced a cybersecurity incident involving ransomware discovered on its computer servers, prompting an investigation by state law enforcement. The malicious software, designed to block access to systems or data until payment is made, was identified within the school's network infrastructure. Authorities examined the incident as an attempted data breach but no confirmed unauthorized data access or encryption outcomes were disclosed in available reports.

Motives

Detailed motive labels are available to members.

2 motives

TTPs

Detailed technique labels are available to members.

1 technique

Description

On August 16, 2019, ransomware was discovered on computer servers belonging to Sherman School, a K-8 institution located at 2 Route 37 East in Sherman, Connecticut. Superintendent-Principal Jeff Melendez publicly confirmed the malware's presence in the school's computer system, characterizing the event as an attempted data breach. Ransomware, defined as malicious software designed to block access to computer systems or data until a ransom payment is made, represented an operational threat to the school's digital infrastructure. The discovery triggered an immediate law enforcement response, with Connecticut State Police initiating an investigation into the incident. No details were disclosed regarding how the ransomware infiltrated the system, whether encryption was successfully activated, or if any ransom demands were communicated to the school administration. The timeframe between initial infection and detection remained unspecified in available reports.

Authorities did not release information confirming whether student or employee data was compromised during the incident, nor did they specify which servers or systems were targeted. The school administration did not publicly disclose containment measures taken following the discovery, such as network isolation or system restoration processes. Similarly, no operational impacts—such as disruptions to academic activities, administrative functions, or data loss—were formally documented in the immediate aftermath. The Connecticut State Police investigation remained active as of September 4, 2019, when the incident became publicly known, but subsequent investigative findings or conclusions were not reported in the available source material. Superintendent Melendez's acknowledgment constituted the sole official statement regarding the attempted breach, with no supplementary details provided about remediation efforts or long-term consequences for the school's cybersecurity posture.

Sources

Sources available to members: 1 source.

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