Fulcrumsec Ransomware
ActiveThreat actor group tracked in the global ransomware database ยท Last disclosure: May 10, 2026
Threat Actor Analysis
Fulcrumsec is a ransomware threat group that has disclosed 23 victims in publicly accessible leak site data, representing 0.1% of all ransomware attacks tracked in this database. The earliest victim disclosure attributed to Fulcrumsec in our dataset dates to May 2026.
Geographically, Fulcrumsec has targeted organisations in 9 countries. The most frequently targeted nation is United States with 13 victim organisations. Other heavily targeted nations include India, United Kingdom, Mexico.
Industry-wise, Fulcrumsec shows a concentration in the Business Services, Consumer Services sectors. These industries are frequently targeted because they manage sensitive data, critical operations, or have lower tolerance for operational downtime โ conditions that increase ransom payment likelihood.
Like most modern ransomware operations, Fulcrumsec likely employs a double extortion model: encrypting victim files while simultaneously exfiltrating data, creating dual pressure to pay the ransom. Victim organisations that refuse payment face having their data published on the group's dark web leak site.
Note: This profile is generated from public leak site disclosures aggregated via the ransomware.live API. Data is updated automatically. The victim table below shows the 2 most recent cached victims; the total victim count (23) reflects the complete database.
Recent Victim Disclosures (2 cached of 23 total)
| # | Organization | Country | Sector | Date |
|---|---|---|---|---|
| 1 |
Arup Group
arup.com
|
๐ฌ๐ง United Kingdom | Business Services | May 10, 2026 |
| 2 |
Stuf Storage
stufstorage.com
|
๐บ๐ธ United States | Consumer Services | May 8, 2026 |
Frequently Asked Questions
What is Fulcrumsec ransomware?
Fulcrumsec is a ransomware threat group that has claimed 23 victims since its first known activity in May 2026. The group operates by infiltrating target networks, exfiltrating data, encrypting files, and threatening to publish stolen data on a dark web leak site if the ransom is not paid.
How many victims has Fulcrumsec attacked?
Fulcrumsec has claimed 23 victims in our database, representing 0.1% of all tracked ransomware attacks. The most targeted countries are United States, India, United Kingdom, Mexico.
Which countries does Fulcrumsec target?
Fulcrumsec has attacked organizations in 9 countries. The top targeted countries are: United States, India, United Kingdom, Mexico.
Which industries does Fulcrumsec target?
Fulcrumsec most frequently targets the Business Services, Consumer Services sectors based on victim disclosures in our database.
Is Fulcrumsec still active?
Fulcrumsec's most recent victim disclosure in our database was on May 10, 2026. Ransomware groups frequently rebrand or go dormant; monitor this page and our ransomware map for the latest activity.