Was Wizz Air hit by ransomware?

Wizz Air was listed by the Stormous ransomware operation (Hungary), 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 Stormous ransomware group?

Stormous 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 Wizz Air breach?

Stormous published data attributed to Wizz Air (~33 GB). Darkfield captured the leak post and a screenshot of the listing.

Ransomware victim disclosure

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Wizz Air

Claimed by Stormous · listed 1 year ago

33 GB

Data size

$900

Ransom

demanded

14m

Age

since listed · data leaked

Status timeline

ListedMay 2, 2025
Data leakeddate unknown

At a glance

Group: Stormous
Status: Data leaked
Country: Hungary
Sector: Transportation/Logistics
Listed on leak site: May 2, 2025
Data size: 33 GB
Ransom demanded: $900

What the group claims

The response stated: "Wizz Air has strong security systems in place, designed to protect the sensitive data of our valued customers and partners." But I would like to know what guarantees you actually offer your customers and others, because this company clearly seems unaware of what’s going on. The breach was published nearly a month ago, and the data has been widely circulated and used. It has also been verified, and it is indeed valid data linked to your employees. Does the company not have any monitoring system? Or perhaps there have been numerous reports of major fraud incidents committed under your name. So, your denial of the breach — which dates back to a month ago — appears more like an attempt to mislead your customers and partners.

The leak post

captured from the group's site

ams-group.co.uk FULL DATA DUMP 33GB
ams-group.co.uk FULL DATA DUMP 33GB
The extracted data comprises administrative and financial records, payroll sheets, and client and partner directories, alongside technical and engineering specifications, employee records, and business plans. It also includes architectural designs, official contracts, detailed engineering reports, and construction site maps, as well as risk assessments, internal correspondence, and tax and legal information.
We releasing the databases of CGCSA.CO.ZA (Consumer Goods Council of South Africa) for free. This comes after the company failed to reach a resolution and publicly denied the breach.The total size is 20 GB and includes.Full Reports CustomerData (thousands of clients) Scripts & Statements Invoices & CEO Reports TCS CGCSA & CGCSA ACC BACKUP SAGE200EVOSQL CGCSA FULL The data has been uploaded to Mega https://mega.nz/folder/siwUDQbL#-c-tWl8fW8zy1tcmEzoUhw
$900k to Solve the Problem 5TB — While TTT Company was preoccupied with designing luxurious interiors and architectural masterpieces, they completely overlooked the design of a secure network. We have spent enough time within their internal infrastructure to c…

Sources

Victim sitewizzair.com
Leak posthttp://6sf5xa7eso3e3vk46i5tpcqhnlayczztj7zjktzaztlotyy75zs6j7qd.onion/

Source

Indexed 1 year 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 Stormous

Stormous is a relatively new ransomware group that emerged in March 2022, operating primarily with financial motivations and has claimed responsibility for attacks against at least 165 victims across multiple countries and sectors. The group's country of origin remains unclear from publicly documented sources, though their operational patterns suggest they may operate as an independent entity rather than a established ransomware-as-a-service model. Limited public documentation from major security firms indicates the group employs common ransomware tactics, though specific details about their initial access vectors, encryption methods, and data exfiltration practices have not been extensively detailed in reports from CISA, FBI, or major threat intelligence providers. Their targeting appears geographically diverse with a focus on Spain, the United States, France, UAE, and Brazil, while showing particular interest in technology, hospitality and tourism, government, and business services sectors, though many of their victims span unspecified industries. As of current reporting, Stormous appears to remain an active threat, though the limited public documentation suggests they operate as a lower-tier ransomware group compared to more prominent families that receive extensive coverage from major security research organizations. The group has been linked to 245 public disclosures across our corpus. First observed on a leak site on March 22, 2022; most recent post July 1, 2026. The operation is currently active.

Timeline of this disclosure

May 2, 2025Wizz Air listed by Stormouson the group's public leak site

Data size: 33 GB
Ransom demanded: $900

Other recent disclosures by Stormous

Stormous has been linked to 245 public victims on Darkfield. A sample of the most recent:

See the full Stormous 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, Wizz Air is reported in Hungary, a country with 7 ransomware disclosures in our corpus.

If your organisation is affected

A listing by Stormous means Wizz Air 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.
Monitor for the data appearing on Stormous'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.