Ransomware Intelligence / Groups / fulcrumsec

Ransomware group

fulcrumsec

FulcrumSec is a data extortion group active since approximately September 2025, specializing in high-speed exfiltration of cloud-hosted databases by exploiting unrotated API keys and misconfigured cloud permissions rather than deploying encryption, with known victims including Australian fintech youX and LexisNexis.

  • 0claims, 7 days
  • 2claims, 30 days
  • 4claims, 90 days
  • 2026-04-29first seen
  • 2026-10-23last seen

These are claims posted by the group on its leak site, counted when we first see them. They are not confirmed incidents, and we never name a victim.

Activity, last 26 weeks

New leak-site claims per week.

Week of 2026-05-11: 0Week of 2026-05-18: 0Week of 2026-05-25: 0Week of 2026-06-01: 0Week of 2026-06-08: 1Week of 2026-06-15: 1Week of 2026-06-22: 0Week of 2026-06-29: 0Week of 2026-07-06: 0Week of 2026-07-13: 0Week of 2026-07-20: 0Week of 2026-07-27: 0Week of 2026-08-03: 0Week of 2026-08-10: 0Week of 2026-08-17: 0Week of 2026-08-24: 0Week of 2026-08-31: 1Week of 2026-09-07: 1Week of 2026-09-14: 0Week of 2026-09-21: 0Week of 2026-09-28: 0Week of 2026-10-05: 0Week of 2026-10-12: 0Week of 2026-10-19: 2Week of 2026-10-26: 0Week of 2026-11-02: 0
Claims per week, oldest to newest. Each bar is a full Monday-to-Sunday week; the newest bar is the current week so far.

In the news

Recent stories in the security press that name fulcrumsec, newest first.

Headlines are shown as the publisher wrote them and link to the original story. They are third-party reporting, not SecuritySnares findings. How stories are picked

Sectors claimed, last 90 days

  1. Professional services 1
  2. Retail 1
  3. Technology 1
  4. Transportation and logistics 1

Countries claimed, last 90 days

  1. China 1
  2. United Kingdom 1
  3. Sweden 1
  4. United States 1

Vulnerabilities fulcrumsec exploits

Our sources do not attribute specific vulnerabilities to fulcrumsec yet.

70% of successful ransomware attacks use remote encryption (Microsoft, 2024): files on protected servers are encrypted over the network from a device the attacker controls. Read our remote encryption briefing →

Newest vulnerabilities used by any ransomware group (CISA KEV)
Added CVE Vendor / product Vulnerability
2026-08-18 CVE-2026-59310 Broadcom VMware vCenter Broadcom VMware vCenter Path Traversal Vulnerability
2026-08-05 CVE-2026-63077 JetBrains TeamCity JetBrains TeamCity Deserialization of Untrusted Data Vulnerability
2026-07-29 CVE-2026-20316 Cisco Secure Firewall Management Center (FMC) Cisco Secure Firewall Management Center Use of Hard-coded Password Vulnerability
2026-07-14 CVE-2026-15410 SonicWall SMA1000 Appliances SonicWall SMA1000 Appliances Code Injection Vulnerability
2026-07-14 CVE-2026-15409 SonicWall SMA1000 Appliances SonicWall SMA1000 Appliances Server-Side Request Forgery Vulnerability
2026-07-01 CVE-2026-45659 Microsoft SharePoint Server Microsoft SharePoint Server Deserialization of Untrusted Data Vulnerability
2026-06-25 CVE-2026-12569 PTC Windchill and FlexPLM PTC Windchill and FlexPLM Improper Input Validation Vulnerability
2026-06-12 CVE-2026-35273 Oracle PeopleSoft Enterprise PeopleTools Oracle PeopleSoft Enterprise PeopleTools Missing Authentication for Critical Function Vulnerability

Data sources: CISA KEV, Ransomchats, RansomLook, Ransomware.live, security news outlets · updated 14 hours ago

Sector, country and ransom-demand figures are SecuritySnares estimates made with a language model. Leak-site listings are claims by threat actors and are not independently verified; leak-site victims are never named unless they have disclosed the incident themselves. News headlines are the publishers' own reporting, shown as written and linked to the original. Methodology