Disclosure context

About worldleaks

Based on the limited available data, worldleaks is a recently emerged ransomware group that was first observed in May 2025 and appears to be primarily financially motivated, having claimed 134 victims in a relatively short timeframe since its emergence. The group's origin and organizational structure remain unclear, with no publicly documented information from major cybersecurity firms or law enforcement agencies regarding their country of origin, potential affiliations, or operational model. Their targeting patterns indicate a focus on English-speaking countries, particularly the United States, United Kingdom, and Canada, with additional activity observed in Germany and Japan, while their sector targeting shows a preference for healthcare, technology, manufacturing, and consumer services organizations. Due to the group's recent emergence and limited public documentation by established threat intelligence sources, specific details about their attack methodologies, encryption techniques, extortion tactics, and notable campaigns have not yet been comprehensively analyzed or reported by organizations such as CISA, FBI, or major cybersecurity research firms. The group appears to remain active as of the most recent observations, though comprehensive threat intelligence profiling awaits further analysis and documentation by established cybersecurity authorities. The group has been linked to 155 public disclosures across our corpus. First observed on a leak site on May 18, 2025; most recent post May 12, 2026. The operation is currently active.

Timeline of this disclosure

March 27, 2026Sheraton Hotel listed by worldleakson the group's public leak site

Sector and geography

This disclosure adds to ransomware activity in the Hospitality and Tourism sector, which has 159 disclosures indexed across all operators we track. Geographically, Sheraton Hotel is reported in United States, a country with 7,392 ransomware disclosures in our corpus.

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.

Ransomware victim disclosure

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Sheraton Hotels and Resorts

listed as Sheraton Hotel · Claimed by worldleaks · listed 2 months ago

54d

Age

since listed · data leaked

Status timeline

Listed
Mar 27, 2026
Data leaked

At a glance

Group: worldleaks
Status: Data leaked
Country: United States
Sector: Hospitality and Tourism
Listed on leak site: Mar 27, 2026

About the victim

AI dossier — public-source company profile

Sheraton Hotels and Resorts is a global luxury hospitality brand owned by Marriott International, founded in 1937. It operates hundreds of hotels, resorts, and residential properties worldwide, serving both leisure and business travelers. Its properties commonly feature conference facilities, fitness centers, and dining services across numerous countries.

Industry: Hospitality & Hotel Management
Employees: 10000+
Founded: 1937

Attack summary

Severity: medium — Data is marked as published, indicating at least some exfiltration claim against a major global hospitality brand that likely holds guest PII, payment data, and loyalty program information; however, the leak post contains no specifics on data type, volume, or proof files, limiting severity assessment.

The group worldleaks claims to have published data belonging to Sheraton Hotels and Resorts, with the disclosure status recorded as data_published. No specific details about the nature of the exfiltrated data, encryption activity, or ransom demand are provided in the leak post.

medium

Original description

AI-summarised, not from the leak post

Sheraton Hotels and Resorts, founded in 1937, is a global hospitality brand owned by Marriott International. It operates luxury hotels, resorts, and residential establishments globally, known for providing high-quality services and amenities. Its properties often offer conference facilities, meeting rooms, fitness centers and occasionally dining services, serving both leisure tourists and business travelers.

Sources

Victim sitesheraton.marriott.com
Leak posthttps://worldleaksartrjm3c6vasllvgacbi5u3mgzkluehrzhk2jz4taufuid.onion/companies/0433968074

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.