Was Sofinter S.p.a hit by ransomware?

Sofinter S.p.a was listed by the payoutsking 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 payoutsking ransomware group?

payoutsking 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 Sofinter S.p.a breach?

payoutsking published data attributed to Sofinter S.p.a. Darkfield captured the leak post and a screenshot of the listing.

Ransomware victim disclosure

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Sofinter S.p.a

Claimed by Payoutsking · listed 2 months ago

46d

Age

since listed · data leaked

Status timeline

ListedApr 30, 2026
Data leakeddate unknown

At a glance

Group: Payoutsking
Status: Data leaked
Country: Italy
Sector: Business Services
Listed on leak site: Apr 30, 2026

About the victim

AI dossier — public-source company profile

Sofinter S.p.A. is an Italian industrial group specializing in the design and manufacturing of large industrial boilers, steam generation systems, and waste-to-energy plants. Operating globally, the company serves oil & gas, petrochemical, power generation, and waste management sectors, with production facilities including a site in Gioia del Colle.

Industry: Industrial Boilers & Thermal Energy Equipment
Address: Via Conservatorio, 17 – 20122 Milano, Italy

Attack summary

Severity: medium — Confirmed data exfiltration with public disclosure by ransomware operator, but no specific proof files enumerated, data categories clarified, or operational impact stated. The company has acknowledged an 'information security incident' (febbraio 2026 news item), supporting the breach claim.

The ransomware group payoutsking claims to have compromised Sofinter and published exfiltrated data. No specific details on data categories or encryption are provided in the leak post.

medium

Data the group says was taken

AI dossier — extracted from the leak post

Corporate/operational data
Potentially sensitive business records

Original description

AI-summarised, not from the leak post

Sofinter S.p.A. is an Italian industrial company specializing in the design and manufacturing of heat recovery systems, boilers, and thermal energy equipment. Operating in the energy and power generation sector, it serves industries including oil and gas, petrochemical, and power plants. Headquartered in Italy, Sofinter provides engineering solutions focused on steam generation and waste heat recovery, supporting both domestic and international markets.

Sources

Victim sitesofinter.it
Leak posthttp://payoutsgn7cy6uliwevdqspncjpfxpmzgirwl2au65la7rfs5x3qnbqd.onion/4qDCcB-uN4ha8-gzhW4u-84L3ij-k77sBe

Source

Indexed 2 months 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 payoutsking

Payoutsking is a ransomware group first observed in July 2025 with an apparent primary motivation of financial gain, having been attributed to approximately 100 known victims within a relatively short operational window. Limited public documentation exists from major threat intelligence sources such as CISA, FBI, or Mandiant at this time, which is consistent with the group's recent emergence and potentially limited public disclosure of incidents. Based on available victimology data, the group has concentrated its targeting efforts primarily across the United States, Germany, the United Kingdom, France, and Spain, suggesting a deliberate focus on economically developed Western nations likely selected for their higher ransom-payment capacity. The sectors most frequently targeted include manufacturing, business services, technology, and construction, with a notable proportion of victims falling outside readily classifiable industry categories, which may indicate opportunistic targeting rather than a highly specialized vertical focus. No definitive attribution regarding country of origin, RaaS affiliation, or specific technical tooling has been publicly confirmed by authoritative sources as of this writing, and the group's attack methodology, encryption schemes, and extortion tactics remain insufficiently documented in open-source reporting to characterize with analytical confidence. Given the group's very recent emergence and the relatively high victim count accumulated in a short timeframe, payoutsking warrants continued monitoring, and security researchers and organizations in the identified target sectors should treat this actor as an active and potentially escalating threat pending further technical analysis and public disclosure. The group has been linked to 100 public disclosures across our corpus. First observed on a leak site on July 7, 2025; most recent post May 13, 2026. The operation is currently active.

Timeline of this disclosure

April 30, 2026Sofinter S.p.a listed by payoutskingon the group's public leak site

Other recent disclosures by payoutsking

payoutsking has been linked to 100 public victims on Darkfield. A sample of the most recent:

See the full payoutsking dossier →

Sector and geography

This disclosure adds to ransomware activity in the Business Services sector, which has 3,795 disclosures indexed across all operators we track. Geographically, Sofinter S.p.a is reported in Italy, a country with 202 ransomware disclosures in our corpus.

If your organisation is affected

A listing by payoutsking means Sofinter S.p.a 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 payoutsking'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.