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Inactive · #88 by victimsRansomware group

Cicada 3301

As of Oct 19, 2026, Cicada 3301 has listed 70 confirmed victims on its leak site since Jun 4, 2024, 0.2% of all victims tracked by Brandefense. Its most targeted country is United States (61.4% of its victims) and its most targeted sector is Consulting.

Cicada3301 is a ransomware-as-a-service group (tracked as Repellent Scorpius by Palo Alto) that emerged in mid-2024 using Rust-based ransomware targeting Windows, Linux, and ESXi systems, suspected to be a successor of BlackCat/ALPHV and running an affiliate program with 20% commissions.

Also known ascicada3301
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Confirmed Victims
70
Rank By Victims
#88
Last Leak-Site Post
Sep 4, 2025
Top Country
United States
Top Sector
Consulting

Victims Posted Per Month.

Cicada 3301 confirmed victims per month
MonthConfirmed victims
June 20244
July 20248
August 202414
September 20245
October 20248
November 20240
December 20243
January 20251
February 202513
March 20252
April 20255
May 20250
June 20250
July 20256
August 20250
September 20251
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 Cicada 3301 Victims.

Search all 70 →
Latest confirmed leak-site victims claimed by Cicada 3301
VictimCountryIndustryData claimedPosted
CI Engineering
cieng.com
USUnited StatesUnknown700 GB
Sensical
sensical.com
USUnited StatesTelecommunicationsNot stated
Burnham Nationwide
burnhamnationwide.com
USUnited StatesConsultingNot stated
gatlogistica.com.br
gatlogistica.com.br
BRBrazilUnknownNot stated
diasdeprimavera.com.br
diasdeprimavera.com.br
BRBrazilUnknownNot stated
PACIFIC BIOLABS
pacificbiolabs.com
USUnited StatesConsultingNot stated

How They Operate.

Cicada 3301's threat actor profile lists 3 malware and tools, with its targets and related actors.

TTPs, CVEs and malware →

Who Cicada 3301 Targets.

Sectors

  1. Consulting1115.7%
  2. Technology68.6%
  3. Education and Research34.3%
  4. Healthcare34.3%
  5. Manufacturing34.3%

Countries

  1. USUnited States4361.4%
  2. CACanada45.7%
  3. BRBrazil34.3%
  4. GBUnited Kingdom34.3%
  5. JPJapan34.3%
Shares are of this group's confirmed victims.

History.


  1. First confirmed victim listed on its leak site

  2. First seen in Brandefense data

  3. Busiest month on record: 14 confirmed victims

  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.