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Incident

Indiana National Guard

Incident posture

Attack window
Oct 2018
Location
United States of America
Status
Historical
CIA posture
Available to members
Updated
2026-08-07 18:09

Linked entities

Victim
Indiana National Guard
Threat actors
0 actors
Sources
1 source

Timeline

Occurred
Oct 2018
Discovered
Pending
Disclosed
Pending
Resolved
Pending

Summary

A ransomware attack compromised a non-military server belonging to the Indiana National Guard, exposing personal information of both civilian and military personnel. The organization intended to notify affected individuals following the breach. This incident occurred alongside similar attacks targeting other government entities, including municipal systems in West Haven and Muscatine, where encrypted servers disrupted operations and led to ransom payments in one case. The Guard's compromised server was isolated from military networks, with no indication of data exfiltration beyond the encryption event. Recovery efforts focused on restoring services and reinforcing network security measures.

Motives

Detailed motive labels are available to members.

1 motive

TTPs

Detailed technique labels are available to members.

1 technique

Description

In October 2018, the Indiana National Guard experienced a ransomware attack affecting a non-military server containing personal information belonging to both civilian and military personnel. The incident was publicly reported on October 16, though the exact attack timeline remains unspecified in available records. The compromised server stored sensitive personal data, prompting the organization to plan formal notifications for affected individuals. No operational military systems were breached according to official statements. The Guard did not disclose whether ransom demands were made, paid, or negotiated, nor did they identify the specific ransomware variant involved. Recovery efforts and technical containment measures were not detailed in public reports, though the acknowledgment of compromised personal information suggested significant data security implications.

This attack coincided with multiple ransomware incidents targeting municipal governments during the same period. West Haven, Connecticut paid a $2,000 ransom on October 16 after 23 servers were encrypted, while Muscatine, Iowa reported a separate attack on October 17 affecting financial systems. The Indiana National Guard incident shared characteristics with these breaches through its focus on governmental entities but differed in its specific compromise of personnel records. Unlike West Haven's immediate ransom payment and file recovery, the Guard's resolution process remained undisclosed beyond their commitment to notify impacted individuals. The concurrent timing of these attacks highlighted a pattern of regional government targeting during mid-October 2018, though no technical or attribution links between the incidents were confirmed in public reporting.

Sources

Sources available to members: 1 source.

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