Was MagMutual hit by ransomware?

MagMutual was listed by the LEAKNET ransomware operation (United States), and stolen data was published on the group's leak site. Darkfield tracks this disclosure with the original leak post, screenshot and group context.

Who is the LEAKNET ransomware group?

LEAKNET is a ransomware operator tracked by Darkfield. See the full operator dossier for its known victims, sectors targeted, IOCs and leak-site infrastructure.

What data was leaked in the MagMutual breach?

LEAKNET published data attributed to MagMutual (~1.1TB), around 7300000 records. Darkfield captured the leak post and a screenshot of the listing.

Ransomware victim disclosure

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MagMutual

Claimed by LEAKNET · listed 2 days ago

1.1TB

Data size

7300000 records

Age

since listed · data leaked

Status timeline

ListedAug 22, 2026
Data leakeddate unknown

At a glance

Group: LEAKNET
Status: Data leaked
Country: United States
Sector: Insurance
Listed on leak site: Aug 22, 2026
Data size: 1.1TB
Records: 7300000

About the victim

AI dossier — public-source company profile

MagMutual is a cyber insurance provider. The group claims the company failed to secure its own systems, resulting in exposure of sensitive data including medical records, financial information, and litigation files.

Industry: Cyber Insurance

Attack summary

Severity: critical — Confirmed exfiltration of 7.3 million records including medical data and HIPAA-regulated patient information at scale, combined with financial and litigation records from a regulated entity.

LEAKNET claims to have exfiltrated 1.1 TB of sensitive information from MagMutual, including 7.3 million records comprising medical records, financial data, and litigation files. The post characterizes the breach as a cyber insurer that failed to protect itself.

critical

Data the group says was taken

AI dossier — extracted from the leak post

Medical records
Financial data
Litigation files
Patient data (HIPAA-regulated)

What the group claims

Cyber insurance company with 1.1TB of sensitive information leaked. 7.3 million records exposed including medical records, financial data, and litigation files.

The leak post

captured from the group's site

##### The 11TB NYC Health + Hospitals Archive is Now Public
#NYCHealthHospitals #HealthcareBreach #DataLeak #HIPAA #SenateHELP #Cassidy #Mamdani #CyberSecurity #DataBreach #PatientPrivacy #HIV #MedicalRecords #12MillionNot1Point8 #HealthcareSecurity #2026Breach #NYC #PublicHealth #SenateInvestigation
##### Data Exfiltration Diaries: The Shocking Stories Inside NYC Health + Hospitals
#NYCHealthHospitals #HealthcareBreach #DataLeak #HIPAA #SenateHELP #Cassidy #Mamdani #CyberSecurity #DataBreach #PatientPrivacy #HIV #MedicalRecords #12MillionNot1Point8 #HealthcareSecurity #2026Breach #NYC #PublicHealth #SenateInvestigation #FalseStatemen
##### NYC Health + Hospitals: Over 12 Million Patients. Lie to the Senate. Hospital and Mayor's Office Sacrifice Their Own Patients
#NYCHealthHospitals #HealthcareBreach #DataLeak #HIPAA #SenateHELP #Cassidy #Mamdani #CyberSecurity #DataBreach #PatientPrivacy #HIV #MedicalRecords #12MillionNot1Point8 #HealthcareSecurity #2026Breach #NYC #PublicHealth #SenateInvestigation #FalseStatemen
##### FULL DATA of MagMutual Company: 1.1 TB Of Sensitive Information From Cybersecurity Experts
#Leaknet #Magmutual #SecurityCulture #DigitalPrivacy #PasswordSecurity …

Data the group says was taken

medical records
financial data
litigation files

Screenshot of the leak post

Sources

Leak posthttp://nleakk6sejx45jxtk7x6iyt65hwvfrkifc5v7ertdlwm3gttbpvlvxqd.onion

Source

Indexed 2 days ago

This page surfaces a public ransomware disclosure indexed by Darkfield. Original posts come from the operator's own leak site; we cross-check against ransomware.live, RansomLook and RansomWatch where applicable. Share this URL freely.

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Disclosure context

About LEAKNET

In the cyber-undergrounds, we're exploring shadowed corridors of the digital world in search of inside information. we’re a digital watchdog operating at the intersection of cybersecurity, internet freedom, and investigative journalism. We delve into the hidden corners of the web, exposing truths and uncovering stories that are often buried by mainstream media or distorted by corporate interests. This project isn’t just for tech experts or privacy advocates. It’s for everyone who values transparency, freedom, and integrity in a connected world. Operating independently, we’re free from corporate influence and political bias, enabling us to report with uncompromising honesty. Our work resonates with a diverse audience cybersecurity experts, digital rights activists, journalists, and anyone who values an internet free from control. In a world where the lines between truth and agenda grow increasingly blurred, we’re building something bold, the space where the truth of the internet can be uncovered, untamed and unfiltered. Our project is an independent voice for digital freedom, committed to shining a light on the internet’s most vital and vulnerable spaces: cybersecurity, privacy, and the right to information without compromise. In a landscape clouded by agendas and profit, we are here to do one thing: deliver the truth, boldly and beautifully. Join us as we push back against the systems that seek to compromise our digital freedoms and carve a path toward a more transparent, liberated internet. The group has been linked to 7 public disclosures across our corpus. First observed on a leak site on June 15, 2026; most recent post August 22, 2026. The operation is currently active.

Timeline of this disclosure

August 22, 2026MagMutual listed by LEAKNETon the group's public leak site

Data size: 1.1TB
Records: 7300000

Other recent disclosures by LEAKNET

LEAKNET has been linked to 7 public victims on Darkfield. A sample of the most recent:

See the full LEAKNET dossier →

Sector and geography

This disclosure adds to ransomware activity in the Insurance sector, which has 53 disclosures indexed across all operators we track. Geographically, MagMutual is reported in United States, a country with 3,164 ransomware disclosures in our corpus.

If your organisation is affected

A listing by LEAKNET means MagMutual appeared on a ransomware extortion site and data attributed to it has been published. If this is your organisation, or a supplier you depend on, the priority is to confirm the intrusion and contain it before the window to act closes.

Engage your incident-response team and preserve forensic evidence before remediating — do not wipe affected systems first.
Force a password reset and revoke active sessions for exposed accounts; rotate any credentials, API keys or certificates that may have been in the stolen data.
Assess regulatory notification duties (GDPR, NIS2, sector regulators) — many carry a 72-hour reporting clock from awareness.
Report the incident to your national CERT, CISA (United States), as required for your jurisdiction.
Monitor for the data appearing on LEAKNET's leak site and across paste and breach channels, and brief downstream partners who may be exposed through you.

How we know this. Darkfield monitors public ransomware leak sites continuously, archiving every new disclosure and the data later released against the victim. Each entry on this page is sourced from the operator's own publication and cross-checked against complementary OSINT feeds (RansomLook, ransomware.live, RansomWatch). We do not collect or host stolen data — only the metadata, timestamps and screenshots needed to make the public disclosure searchable and accountable. Records here are corrected when the original post is edited, retracted, or merged with another disclosure.