Was Mesto Celakovice hit by ransomware?

Mesto Celakovice was listed by the thegentlemen ransomware operation (Czechia), 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 Mesto Celakovice breach?

thegentlemen published data attributed to Mesto Celakovice. Darkfield captured the leak post and a screenshot of the listing.

Ransomware victim disclosure

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Město Čelákovice

listed as Mesto Celakovice · Claimed by Thegentlemen · listed 6 hours ago

Today

Age

since listed · data leaked

Status timeline

ListedJul 16, 2026
Data leakeddate unknown

At a glance

Group: Thegentlemen
Status: Data leaked
Country: Czechia
Sector: Manufacturing
Listed on leak site: Jul 16, 2026

About the victim

AI dossier — public-source company profile

Město Čelákovice is a municipality in the Central Bohemian Region of the Czech Republic, situated on the Elbe River approximately 27 kilometers from Prague. With approximately 12,000 residents, it serves as a local administrative and cultural hub, providing municipal services through its town hall (Městský úřad).

Industry: Public Administration & Local Government
Address: Náměstí 5. května 1, 250 88 Čelákovice, Czech Republic

Attack summary

Severity: medium — Data from a public municipality has been published; however, the sensitive nature of municipal administrative records (budgets, citizen data, procurement information) and the fact that this is critical infrastructure serving 12,000 residents elevates concern beyond low severity. No specific proof count or data inventory is detailed in the leak post.

TheGentlemen group claims to have compromised Město Čelákovice's systems. The leak post indicates data publication but provides no specific details about the nature of the breach (encryption vs. exfiltration) or scope of compromised data.

medium

Data the group says was taken

AI dossier — extracted from the leak post

municipal records
administrative files
city government systems

What the group claims

***.cz zoominfo.com/c/město-čelákovice/426355970 town in the Central Bohemian Region of the Czech Republic, situated on the Elbe River approximately 27 kilometers from Prague. With a population of around 12,000 residents, it serves as a local administrative and cultural hub. The official website functions as the primary municipal portal, offering citizens and visitors essential information, administrative services, news, and contact details for the local government

Sources

Victim sitecelakovice.cz

Source

Indexed 6 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 618 public disclosures across our corpus. First observed on a leak site on September 9, 2025; most recent post July 16, 2026. The operation is currently active.

Also tracked as: the gentlemen.

Timeline of this disclosure

July 16, 2026Mesto Celakovice listed by thegentlemenon the group's public leak site

Other recent disclosures by thegentlemen

thegentlemen has been linked to 618 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 Manufacturing sector, which has 3,681 disclosures indexed across all operators we track. Geographically, Mesto Celakovice is reported in Czechia, a country with 15 ransomware disclosures in our corpus.

If your organisation is affected

A listing by thegentlemen means Mesto Celakovice 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.
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.