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Inactive · #246 by victimsRansomware group

Bert

As of Oct 19, 2026, Bert has listed 7 confirmed victims on its leak site since Apr 4, 2025, 0.0% of all victims tracked by Brandefense. Its most targeted country is United States (28.6% of its victims) and its most targeted sector is Consulting.

BERT is a newly emerged ransomware group first identified in mid-2025, targeting Windows and Linux platforms across healthcare, technology, and event services sectors in Asia, Europe, and the US, with ransomware derived from a Linux variant of REvil using AES encryption and multi-threaded file locking.

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Confirmed Victims
7
Rank By Victims
#246
Last Leak-Site Post
Jun 10, 2025
Top Country
United States
Top Sector
Consulting

Victims Posted Per Month.

Bert confirmed victims per month
MonthConfirmed victims
April 20253
May 20252
June 20252
July 20250
August 20250
September 20250
October 20250
November 20250
December 20250
January 20260
February 20260
March 20260
April 20260
May 20260
June 20260
July 20260
August 20260
September 20260
October 2026 (month in progress)0
Updated continuously · figures as of Oct 19, 2026

Latest Bert Victims.

Search all 7 →
Latest confirmed leak-site victims claimed by Bert
VictimCountryIndustryData claimedPosted
S5 Agency World
s5agencyworld.com
GBUnited KingdomUnknownNot stated
Columbia TI
columbiati.com.br
COColombiaUnknownNot stated
Wawasan Dengkil Sdn Bhd
wdgroup.com.my
MYMalaysiaUnknownNot stated
ALL RING TECH CO., LTD.
allring-tech.com.tw
TWTaiwanFinancial ServicesNot stated
SIMCO Electronics
simco.com
USUnited StatesConsultingNot stated
Yozgat City Hospital
yozgatsehir.saglik.gov.tr
TRTürkiyeConsulting, Government and Public SectorNot stated

How They Operate.

Bert's threat actor profile lists 1 malware and tools, with its targets and related actors.

TTPs, CVEs and malware →

Who Bert Targets.

Sectors

  1. Consulting342.9%
  2. Financial Services114.3%
  3. Government and Public Sector114.3%

Countries

  1. USUnited States228.6%
  2. COColombia114.3%
  3. GBUnited Kingdom114.3%
  4. MYMalaysia114.3%
  5. TRTürkiye114.3%
Shares are of this group's confirmed victims.

History.


  1. Busiest month on record: 3 confirmed victims

  2. First seen in Brandefense data

  3. First confirmed victim listed on its leak site

  4. Most recent leak-site post

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Figures as of Oct 19, 2026. Confirmed leak-site claims collected by Brandefense technologies and validated by Brandefense analysts.

Listed on a leak site means a ransomware group has claimed the company; it is not a confirmed breach. To request a correction or removal, contact Brandefense.