Was Mandurah State Emergency Service hit by ransomware?

Mandurah State Emergency Service was listed by the thegentlemen ransomware operation (Australia), 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 Mandurah State Emergency Service breach?

thegentlemen published data attributed to Mandurah State Emergency Service. Darkfield captured the leak post and a screenshot of the listing.

Ransomware victim disclosure

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Mandurah State Emergency Service

Claimed by Thegentlemen · listed 3 hours ago

Today

Age

since listed · data leaked

Status timeline

ListedOct 3, 2026
Data leakeddate unknown

At a glance

Group: Thegentlemen
Status: Data leaked
Country: Australia
Sector: Government & Defense
Listed on leak site: Oct 3, 2026

About the victim

AI dossier — public-source company profile

Mandurah State Emergency Service is a volunteer-led emergency rescue unit operating under the Department of Fire and Emergency Services (DFES) Western Australia. Based in Greenfields, WA, it responds 24/7 to storms, floods, search and rescue, water/cliff rescues, and fire support, with approximately 80+ active volunteers and 60–90 cadets (ages 12–17). The unit logs 3,500–4,300 operational hours annually and runs one of WA's largest cadet programs.

Industry: Emergency Services & Disaster Relief
Address: 31 Education Drive, Greenfields, WA 6210, Australia
Employees: 80+
Founded: 1976

Attack summary

Severity: high — Breach of a government emergency services organization with access to volunteer and cadet records (including minors ages 12–17), operational procedures, and sensitive emergency response data. Even without confirmed exfiltration, compromise of critical infrastructure supporting public safety and minor safeguarding constitutes high severity.

The threat actor claims to have accessed and published data from Mandurah State Emergency Service. No specific operational impact or data exfiltration details are stated in the available leak post excerpt.

high

What the group claims

mandurahses.org.au Mandurah State Emergency Service is a volunteer emergency rescue unit (part of DFES Western Australia), founded in 1976/78 and celebrating its 50th anniversary in 2026, based at 31 Education Drive, Greenfields, WA 6210. It is a non-profit organization — there is no revenue; funding comes from DFES (WA Government) and community donations. The unit has ~80+ active volunteers and 60–90 cadets (ages 12–17), one of the largest SES cadet programs in WA (26 years running), led by Local Manager Chris Stickland ESM (volunteer since 1986, unit leader since 2010). It responds 24/7/365 to storms, floods, land searches, water/cliff rescues and fires support — logging ~3,500–4,300 operational hours and up to 8,000 community hours per year.

Sources

Victim sitemandurahses.org.au

Source

Indexed 3 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 922 public disclosures across our corpus. First observed on a leak site on September 9, 2025; most recent post October 3, 2026. The operation is currently active.

Also tracked as: the gentlemen.

Timeline of this disclosure

October 3, 2026Mandurah State Emergency Service listed by thegentlemen on the group's public leak site

Other recent disclosures by thegentlemen

thegentlemen has been linked to 922 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 Government & Defense sector, which has 6 disclosures indexed across all operators we track. Geographically, Mandurah State Emergency Service is reported in Australia, a country with 188 ransomware disclosures in our corpus.

If your organisation is affected

A listing by thegentlemen means Mandurah State Emergency Service 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, ACSC (Australia), 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.