Holtec International — Cyber Attacks, Breaches & Threat Activity

Threat entity extracted from intelligence sources

Frequency
1
occurrences
First Seen
June 7, 2026
Last Seen
June 7, 2026

Holtec International is an organization tracked by ThreatCluster, appearing in 1 threat cluster built from 1 intelligence report mention.

Holtec International is a organization tracked across 1 threat cluster and 1 intelligence report mention on ThreatCluster. First observed June 7, 2026; most recent activity June 7, 2026.

Related Threat Clusters

Recent Intelligence Reports

  • Russian Drone Hits Nuclear Fuel Storage Site in Chornobyl Zone — United24Media · June 7, 2026

Frequently asked questions

What is Holtec International?

Holtec International is an organization tracked by ThreatCluster, appearing in 1 threat cluster built from 1 intelligence report mention.

Is Holtec International still active?

The most recent intelligence report mentioning Holtec International on ThreatCluster is dated June 7, 2026.

What is Holtec International associated with?

Across ThreatCluster reporting, Holtec International most frequently co-occurs with Energoatom, International Atomic Energy Agency, Russia, Energy.

What are the latest developments involving Holtec International?

The most significant recent cluster is “Drone Strike at Zaporizhzhia Nuclear Plant Kills Worker, IAEA Issues Urgent Warning” (155 articles · Updated April 27, 2026). Holtec International appears across 1 threat cluster in total, listed above with sources.

How much reporting does ThreatCluster have on Holtec International?

Holtec International appears in 1 intelligence report mention across 1 deduplicated threat cluster, aggregated from 17,000+ monitored sources.

CVSS v3.1 Breakdown