Leaknet Review this actor's tracked leak-site claims, published reporting, and attributed threat evidence.
ransomware 98 leak-site claims, all timeLatest observed leak-site post 2026-11-01
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Executive facts
Actor Leaknet
Kind ransomware
Actor record created 2026-07-15
Latest observed 2026-11-01
Leak-site claims 98
Catalogued techniques 0 Scope
Tracked sectors Healthcare, Construction & Engineering, Insurance, Financial Services, Government
Claim records 2025-08-18 to 2026-11-01 Vulnerability events linked to this group No dated vulnerability events are attached to this group's linked vulnerabilities.
Verified techniques No verified ATT&CK mapping for this group.
Defensive actions No defensive actions are attached to this profile.
Most-claimed sectors Healthcare Construction & Engineering Insurance Financial Services Government
Activity window in this site's data
This is only the dates observed by this site. It is not this actor's lifetime or evidence of dormancy outside these dates.
Claim records First observed 2025-08-18 Latest observed 2026-11-01 Claims posted under this group's name or leak-site brand 98 Verified ATT&CK phases represented
No verified ATT&CK mapping for this group
Origin and motivation
Origin and motivation not attributed.
No MITRE ATT&CK group mapping exists for this actor yet. Mappings here are strict: an actor links to a MITRE group only when the group's own name, aliases, or MITRE-published description match, and MITRE has not catalogued this group. Technique and defensive action data will appear automatically if a verified mapping lands.
Claims posted under this group's name or leak-site brand
98 on this site PLAINTEXT PANIC: Patients SSNs Just Dropped in the Wild Healthcare 2026-11-01 source ↗ Natsoft Corporation: 618 GB Gone, Silence Kept Technology 2026-10-27 source ↗ Will the Katecho,LLC be able to handle the hack and prevent a data breach in time? Healthcare 2026-09-05 source ↗ The 11TB NYC Health + Hospitals Archive is Now Public Healthcare 2026-08-18 source ↗ Data Exfiltration Diaries: The Shocking Stories Inside NYC Health + Hospitals Healthcare 2026-08-06 source ↗ Data Exfiltration Diaries: The Shocking Stories Inside NYC Health + Hospitals Healthcare 2026-08-06 source ↗ NYC Health + Hospitals: Over 12 Million Patients. Lie to the Senate. Hospital and Mayor's Healthcare 2026-07-29 source ↗ FULL DATA of MagMutual Company: 1.1 TB Of Sensitive Information From Cybersecurity Experts Insurance 2026-07-22 source ↗ Anglo Belgian Corp: NATO's Nightmare? 6TB of Submarine Secrets, Nuclear Plant Schematics, Aerospace & Defense 2026-07-15 source ↗ The Cyber Insurer Who Couldn't Cyber: MagMutual Leaves 7.3M Records Out to Dry Insurance 2026-06-25 source ↗ View all on Breaches → Leak-site claim activity
Claims per month, 2025-08 to 2026-11. Peak 20 in 2025-08.
20 2 4 4 7 10 12 13 9 4 4 3 3 1 1 1
2025-08 2026-11
Show monthly counts as a table 0 additional claims without a disclosure date
Ransomware claim data is unverified: RansomLook (CC BY 4.0).