Was Goteborgsregionens Tekniska Gymnasium hit by ransomware?

Goteborgsregionens Tekniska Gymnasium was listed by the thegentlemen ransomware operation (Sweden), and stolen data was published on the group's leak site. Darkfield tracks this disclosure with the original leak post, screenshot and group context.

Who is the thegentlemen ransomware group?

thegentlemen is a ransomware operator tracked by Darkfield. See the full operator dossier for its known victims, sectors targeted, IOCs and leak-site infrastructure.

What data was leaked in the Goteborgsregionens Tekniska Gymnasium breach?

thegentlemen published data attributed to Goteborgsregionens Tekniska Gymnasium. Darkfield captured the leak post and a screenshot of the listing.

Ransomware victim disclosure

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Goteborgsregionens Tekniska Gymnasium

Claimed by Thegentlemen · listed 20 hours ago

Today

Age

since listed · data leaked

Status timeline

ListedSep 15, 2026
Data leakeddate unknown

At a glance

Group: Thegentlemen
Status: Data leaked
Country: Sweden
Sector: Education
Listed on leak site: Sep 15, 2026

About the victim

AI dossier — public-source company profile

Goteborgsregionens Tekniska Gymnasium (GTG) is a tuition-free upper-secondary technical school located in Lindholmen Science Park, Göteborg, Sweden, owned jointly by 13 Gothenburg-area municipalities and Volvo Group/Volvo Cars. Founded in 2006 to address regional engineering talent shortage, it offers technical programs including Teknikprogrammet (design, production, IT/media) and Industritekniska programmet (industrial technology), serving approximately 700–900 students with direct pathways to Chalmers engineering or industrial apprenticeships.

Industry: Secondary Education (Technical Gymnasium)
Address: Lindholmen Science Park, Göteborg, Sweden
Employees: 700-900
Founded: 2006

Attack summary

Severity: medium — Educational institution with confirmed data publication (disclosed_status: data_published), affecting minors and institutional records. No ransom demand or operational disruption stated. Moderate sensitivity due to student population and administrative data exposure.

thegentlemen claims to have accessed and published data from GTG. The leak post does not specify the nature of the breach (encryption vs. exfiltration only) or describe the content of published files in detail.

medium

Data the group says was taken

AI dossier — extracted from the leak post

Student records
Staff information
School administrative data

What the group claims

gtg.se zoominfo.com/c/göteborgsregionens-tekniska-gymnasium/458572877 GTG technical upper-secondary school (gymnasium) owned by 13 Gothenburg-area municipalities (via the Göteborgsregionens kommunalförbund) — founded in 2006 specifically to solve the region's engineering talent shortage, the first inter-municipal school of its kind in Sweden. Located inside Lindholmen Science Park next to Chalmers, Volvo, SKF and Saab — a genuine "school inside an industrial cluster" with guest lectures, real projects, internships and equipment from industry partners. Programs: Teknikprogrammet (design & product development, production, IT/media tech) and El- och energiprogrammet (automation, electricity, energy) — ~700–900 students, tuition-free, with graduates feeding directly into Chalmers engineering programs or industrial apprenticeships.

Sources

Victim sitegtg.se

Source

Indexed 20 hours ago

This page surfaces a public ransomware disclosure indexed by Darkfield. Original posts come from the operator's own leak site; we cross-check against ransomware.live, RansomLook and RansomWatch where applicable. Share this URL freely.

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Disclosure context

About thegentlemen

thegentlemen is a ransomware group that emerged in September 2025, operating with apparent financial motivations based on their broad targeting of commercial sectors. The group has documented 267 victims across multiple countries, with primary focus on the United States, Thailand, France, Brazil, and India. Their targeting strategy demonstrates a preference for high-value sectors including manufacturing, technology, healthcare, and financial services organizations. Given the group's recent emergence and limited public documentation from established threat intelligence sources such as CISA, FBI, or major security research firms, specific details regarding their country of origin, operational structure, attack methodologies, encryption techniques, and whether they employ ransomware-as-a-service models remain unclear. The relatively high victim count of 267 in a short operational timeframe since September 2025 suggests either an aggressive campaign pace or potential inflation of victim numbers through affiliate operations, though without corroborating intelligence reports, the group's exact operational capabilities and notable campaigns cannot be definitively established. Current intelligence indicates the group remains active as of late 2025, though comprehensive threat profiling requires additional validated reporting from authoritative cybersecurity sources. The group has been linked to 868 public disclosures across our corpus. First observed on a leak site on September 9, 2025; most recent post September 15, 2026. The operation is currently active.

Also tracked as: the gentlemen.

Timeline of this disclosure

September 15, 2026Goteborgsregionens Tekniska Gymnasium listed by thegentlemen on the group's public leak site

Other recent disclosures by thegentlemen

thegentlemen has been linked to 868 public victims on Darkfield. A sample of the most recent:

See the full thegentlemen dossier →

Sector and geography

This disclosure adds to ransomware activity in the Education sector, which has 1,087 disclosures indexed across all operators we track. Geographically, Goteborgsregionens Tekniska Gymnasium is reported in Sweden, a country with 18 ransomware disclosures in our corpus.

If your organisation is affected

A listing by thegentlemen means Goteborgsregionens Tekniska Gymnasium appeared on a ransomware extortion site and data attributed to it has been published. If this is your organisation, or a supplier you depend on, the priority is to confirm the intrusion and contain it before the window to act closes.

Engage your incident-response team and preserve forensic evidence before remediating — do not wipe affected systems first.
Force a password reset and revoke active sessions for exposed accounts; rotate any credentials, API keys or certificates that may have been in the stolen data.
Assess regulatory notification duties (GDPR, NIS2, sector regulators) — many carry a 72-hour reporting clock from awareness.
Report the incident to your national CERT, CERT-SE (Sweden), as required for your jurisdiction.
Monitor for the data appearing on thegentlemen's leak site and across paste and breach channels, and brief downstream partners who may be exposed through you.

How we know this. Darkfield monitors public ransomware leak sites continuously, archiving every new disclosure and the data later released against the victim. Each entry on this page is sourced from the operator's own publication and cross-checked against complementary OSINT feeds (RansomLook, ransomware.live, RansomWatch). We do not collect or host stolen data — only the metadata, timestamps and screenshots needed to make the public disclosure searchable and accountable. Records here are corrected when the original post is edited, retracted, or merged with another disclosure.