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Ceska filharmonie

thegentlemen

This record tracks a ransomware attack claimed by the thegentlemen group against Ceska filharmonie. It collects the publicly disclosed attack details — sector, location and timeline — as published on the operator's leak site and indexed by Breach House.

Window Zero

EXPOSURE GAP

Window Zero is the time the breach stayed in the open before anyone said so — the gap between when the attack was first discovered on the operator's leak site (t1) and when it was publicly disclosed (t2). The wider this window, the longer victims, staff and customers were exposed with no warning.

49days open
t1 · Published t2 · Pending
Jul 23, 2026Not disclosed yet
Country
Czechia
Business Category
Services
Employees
101-1000
Discovered
2026-07-23
Published
July 23, 2026
Disclosed / Notified
Not disclosed yet
Victim ID
kFaDSgBmZkSU

Attack Summary

***.cz zoominfo.com/c/esk-filharmonie/1100523885 The Czech Philharmonic (Česká filharmonie) is one of the world's most renowned symphony orchestras, based in Prague, Czech Republic. It gave its first independent concert on January 4, 1896, under the baton of Antonín Dvořák, and has been resident at the historic Rudolfinum concert hall for over a century. The orchestra is globally celebrated for its authentic and masterful interpretations of Czech composers such as Dvořák, Smetana, and Janáček. Currently, the ensemble is led by Chief Conductor and Music Director Semyon Bychkov, continuing its legacy of artistic excellence and international touring.

Leak Screenshots

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contract_signed.pdf
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Dark Web Exposure

Findings for ceskafilharmonie.cz — indexed by HaveIBeenRansom.
6
found in Infostealer logs
12
found in Traditional breaches
1
found in Ransomware leaks
Cit0day [cit0day.in] breaches.csv
LKnet reserve chat · breach
••• emails
Untitled leak
— · breach
••• emails
148GB (72).txt
DBs Backup · breach
••• emails
Instagram.rar
Formaceft db · breach
••• emails
@TXTLOG_ALIEN — @TXTLOG_LINK - 491.txt
Database World ROC · breach
••• emails
DBs Backup · ransomware
••• emails
— · breach
••• emails
DBs Backup · breach
••• emails
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