Cyber Threat Intelligence
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Ransomware Victim Energy

Tetra Technologies Inc

Ransomware attack by Silentransomgroup · Disclosed May 6, 2025 · 🇺🇸 United States

tetratec.com

Date Disclosed
May 6, 2025
2025
Threat Group
Silentransomgroup
118 total victims
Country
🇺🇸 United States
Industry
Energy

Incident Analysis

Tetra Technologies Inc was targeted by Silentransomgroup ransomware, one of the most active ransomware groups in our database with 118 confirmed victims globally. The attack was disclosed on May 6, 2025, when Tetra Technologies Inc appeared on the group's dark web leak site.

Tetra Technologies Inc is based in United States , operating in the Energy sector. United States ranks #1 globally for ransomware attacks, with 9,028 victims in our database.

Sector context: Energy sector attacks can have critical infrastructure implications. Ransomware on operational technology (OT) networks can disrupt power generation and distribution, elevating the urgency of recovery.

Silentransomgroup typically employs a double extortion model: first exfiltrating sensitive data from the victim's systems, then deploying ransomware to encrypt files. Victims face two simultaneous threats — paying to restore access and paying to prevent publication of stolen data. The group's leak site publishes victim names and exfiltrated data as leverage.

Data source: This incident record is sourced from public ransomware group leak site disclosures aggregated via the ransomware.live API. Disclosure date reflects when the victim was published on the leak site, which may differ from the initial date of compromise. This platform does not publish or link to stolen data. Last data update: Aug 5, 2026 20:00 UTC.

Frequently Asked Questions

Was Tetra Technologies Inc attacked by ransomware?

Yes. Tetra Technologies Inc was listed as a victim of the Silentransomgroup ransomware group on May 6, 2025. The organisation is based in United States and operates in the Energy sector. The disclosure appeared on the group's dark web leak site.

Which ransomware group attacked Tetra Technologies Inc?

Tetra Technologies Inc was attacked by Silentransomgroup ransomware. Silentransomgroup is one of the most active ransomware groups, having claimed 118 victims globally. The group typically employs a double-extortion model: encrypting the victim's files and threatening to publish stolen data.

When did the Tetra Technologies Inc ransomware attack occur?

The ransomware attack on Tetra Technologies Inc was disclosed on May 6, 2025. This date reflects when the victim was published on the threat group's leak site, which may differ from the actual date of initial compromise.

What data was stolen in the Tetra Technologies Inc ransomware attack?

The specific data stolen from Tetra Technologies Inc has not been independently verified by this platform. Ransomware groups typically exfiltrate data before encrypting systems and use the threat of publication to pressure victims. As a Energy organisation, Tetra Technologies Inc likely held sensitive business data, client information, and operational records.

How can organisations protect against Silentransomgroup attacks?

To defend against Silentransomgroup and similar threat actors, organisations should: maintain regular offline backups tested for restoration; implement network segmentation to limit lateral movement; deploy multi-factor authentication on all remote access; use endpoint detection and response (EDR) tools; conduct regular phishing and security awareness training; and monitor threat intelligence feeds for indicators of compromise (IOCs) associated with active groups.