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Inactive · #155 by victimsRansomware group

KelvinSecurity

As of Oct 19, 2026, KelvinSecurity has listed 25 confirmed victims on its leak site since Jul 11, 2025, 0.1% of all victims tracked by Brandefense.

KelvinSecurity is a financially motivated hacking group active since at least 2015, primarily engaged in stealing and selling databases from telecommunications, healthcare, and political organizations worldwide, with notable breaches including Vodafone Italia and Frost & Sullivan; the group's leader was arrested by Spanish police.

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Confirmed Victims
25
Rank By Victims
#155
Last Leak-Site Post
Jul 11, 2025
Top Country
Unknown
Top Sector
Unknown

Victims Posted Per Month.

KelvinSecurity confirmed victims per month
MonthConfirmed victims
July 202525
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 KelvinSecurity Victims.

Search all 25 →
Latest confirmed leak-site victims claimed by KelvinSecurity
VictimCountryIndustryData claimedPosted
TRANSCONTRACTUnknownUnknownNot stated
Mansfield EnergyUnknownUnknownNot stated
Channel Navigator business intelligence ITUnknownUnknownNot stated
Next Leak On HoldUnknownUnknownNot stated
PTC IndustriesUnknownUnknownNot stated
Municipality of PosadasUnknownUnknownNot stated

How They Operate.

KelvinSecurity's threat actor profile lists 2 ATT&CK techniques, 1 malware and tools, with its targets and related actors.

TTPs, CVEs and malware →

History.


  1. First seen in Brandefense data

  2. Busiest month on record: 25 confirmed victims

  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.