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WOHA

Claimed by Lamashtu · listed 2 months ago

2m
Age
since listed · data leaked

Status timeline

  1. ListedMay 6, 2026
  2. Data leakeddate unknown

At a glance

Group
Lamashtu
Status
Data leaked
Country
Singapore
Sector
Hospitality and Tourism
Listed on leak site
May 6, 2026

About the victim

AI dossier — public-source company profile

WOHA is a Singapore-based architectural practice founded in 1994 by Wong Mun Summ and Richard Hassell, headquartered at 29 HongKong Street, Singapore. The firm specialises in integrating environmental and social principles into high-density urban architecture and urban design solutions. It is globally recognised for projects such as Parkroyal Collection Pickering and Kampung Admiralty in Singapore.

Industry
Architecture & Urban Design
Address
29 HongKong Street, Singapore 059668
Founded
1994

Attack summary

Severity: medium — Data is marked as published, indicating confirmed exfiltration or release, but no details on the nature, volume, or sensitivity of the data (e.g. PII, financial records) are provided, and no ransom or data size is stated, precluding a higher severity rating.

The ransomware group Lamashtu claims to have compromised WOHA, with the disclosure status recorded as data_published, indicating data has been released or made available. No specific details on encryption or the volume of exfiltrated data were provided in the leak post.

medium

What the group claims

WOHA is a renowned Singapore-based architectural practice founded in 1994 by Wong Mun Summ and Richard Hassell. The firm is globally recognized for its integration of environmental and social principles into high-density urban settings.

Sources

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 lamashtu

Based on the limited available information, Lamashtu is an emerging ransomware group that was first observed in April 2026, appearing to be financially motivated based on their operational patterns. The group's origin and potential affiliations remain unclear due to their recent emergence and limited public documentation by major threat intelligence organizations. Lamashtu's attack methodology and specific technical capabilities have not been extensively documented by established security researchers, though their targeting patterns suggest they employ standard ransomware deployment techniques across multiple industry verticals. The group has conducted at least 8 confirmed attacks, demonstrating a geographically diverse targeting approach with victims identified in France, Italy, the United States, Singapore, and Malaysia, while focusing primarily on business services, manufacturing, transportation and logistics, hospitality and tourism, and energy sectors. Given the group's recent first observation in April 2026 and limited public threat intelligence reporting from established sources like CISA, FBI, or major security firms, Lamashtu appears to represent a newly active threat actor whose current operational status and long-term capabilities require further monitoring and analysis. The group has been linked to 34 public disclosures across our corpus. First observed on a leak site on April 13, 2026; most recent post June 17, 2026. The operation is currently active.

Timeline of this disclosure

  • May 6, 2026WOHA listed by lamashtuon the group's public leak site

Other recent disclosures by lamashtu

lamashtu has been linked to 34 public victims on Darkfield. A sample of the most recent:

See the full lamashtu dossier →

Sector and geography

This disclosure adds to ransomware activity in the Hospitality and Tourism sector, which has 452 disclosures indexed across all operators we track. Geographically, WOHA is reported in Singapore, a country with 45 ransomware disclosures in our corpus.

If your organisation is affected

A listing by lamashtu means WOHA 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, SingCERT (Singapore), as required for your jurisdiction.
  • Monitor for the data appearing on lamashtu'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.