Was grimaldialliance.com hit by ransomware?

grimaldialliance.com was listed by the Black Basta ransomware operation (Italy), 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 Black Basta ransomware group?

Black Basta 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 grimaldialliance.com breach?

Black Basta published data attributed to grimaldialliance.com (~1.5 TB). Darkfield captured the leak post and a screenshot of the listing.

Ransomware victim disclosure

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Grimaldi Alliance

listed as grimaldialliance.com · Claimed by Black Basta · listed 2 years ago

1.5 TB

Data size

19m

Age

since listed · data leaked

Status timeline

ListedDec 18, 2024
Data leakeddate unknown

At a glance

Group: Black Basta
Status: Data leaked
Country: Italy
Sector: Transportation/Logistics
Listed on leak site: Dec 18, 2024
Data size: 1.5 TB

About the victim

AI dossier — public-source company profile

Grimaldi Alliance is an international law firm based in Milan, Italy, operating across over 70 jurisdictions with a strong presence in Europe and the Americas. The firm provides comprehensive legal services to national and international clients.

Industry: Legal Services
Address: Corso Europa, 12, 20122 Milan, Italy

Attack summary

Severity: critical — Confirmed exfiltration of large-scale regulated sensitive data including employee PII, client PII, financial records, and confidential legal documents from a law firm operating across 70+ jurisdictions. Data has been published. Legal/professional services firms handle highly sensitive client information and attorney-client privileged communications.

Black Basta claims to have exfiltrated approximately 1.5 TB of data from Grimaldi Alliance, including corporate data, financial records, payroll information, employee personal data, client information, and confidential legal documents including NDAs.

critical

Data the group says was taken

AI dossier — extracted from the leak post

Corporate data
Financial records
Accounting records
Payroll data
Employee personal documents
Client personal data
Client documents
Confidential legal documents
Non-Disclosure Agreements

What the group claims

Grimaldi Alliance is an international law firm based in Italy, known for providing comprehensive legal services to both national and international clients. Established as a significant player in the legal market, Grimaldi Alliance operates in over 70 jurisdictions worldwide, with a strong presence in Europe and the Americas.SITE: www.grimaldialliance.com Address : Corso Europa, 12 20122 Milan ItalyTEL#: +39 02 3030 9330ALL DATA SIZE: ≈1.5tb+ 1. Corp data, Financial data, Accounting, Payroll 2. HR, Personal employees data and documents 3. Personal clients data and documents 4. Confidential documents, NDA’s & etc…

Sources

Victim sitegrimaldialliance.com

Source

Indexed 2 years 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 Black Basta

Black Basta is a financially motivated ransomware group that emerged in April 2022 and has since compromised approximately 800 organizations worldwide. The group operates as a Ransomware-as-a-Service (RaaS) model with suspected ties to the now-defunct Conti ransomware operation, though their exact country of origin remains unconfirmed by law enforcement agencies. Black Basta primarily gains initial access through phishing campaigns, exploitation of known vulnerabilities, and credential stuffing attacks, subsequently deploying their custom ransomware that employs ChaCha20 encryption algorithm and employs double extortion tactics by exfiltrating sensitive data before encryption and threatening to publish it on their leak site if ransom demands are not met. The group has demonstrated a preference for targeting organizations in the United States, United Kingdom, Germany, Canada, and Italy, with a particular focus on business services, manufacturing, technology, healthcare, and agriculture sectors. Notable victims have included various healthcare systems and manufacturing companies, though specific ransom amounts and high-profile attacks have not been widely disclosed in public law enforcement advisories. As of 2024, Black Basta remains an active threat with continued operations and regular updates to their leak site indicating ongoing compromise activities. The group has been linked to 1,323 public disclosures across our corpus. First observed on a leak site on April 26, 2022; most recent post January 11, 2025. The operation is currently inactive.

Also tracked as: BlackBasta.

Timeline of this disclosure

December 18, 2024grimaldialliance.com listed by Black Bastaon the group's public leak site

Data size: 1.5 TB

Other recent disclosures by Black Basta

Black Basta has been linked to 1,323 public victims on Darkfield. A sample of the most recent:

See the full Black Basta dossier →

Sector and geography

This disclosure adds to ransomware activity in the Transportation/Logistics sector, which has 1,081 disclosures indexed across all operators we track. Geographically, grimaldialliance.com is reported in Italy, a country with 635 ransomware disclosures in our corpus.

If your organisation is affected

A listing by Black Basta means grimaldialliance.com 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, CSIRT Italia (Italy), as required for your jurisdiction.
Monitor for the data appearing on Black Basta'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.